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{{Short description|Person skilled in information technology}}
{{dablink|This article is about computer hacking. For other uses, see ] and ].}}
{{Other uses}}
{{Pp-semi-indef|small=yes}}
], ], April 26–27, 2014|alt=A group of people working on laptop computers at a common table]]
{{Computer hacking}}


A '''hacker''' is a person skilled in ] who achieves goals by non-standard means. The term has become associated in ] with a ]{{snd}}someone with knowledge of ] or ] to break into computer systems and access data which would otherwise be inaccessible to them. In a positive connotation, though, hacking can also be utilized by legitimate figures in legal situations. For example, ] sometimes use hacking techniques to collect evidence on criminals and other malicious actors. This could include using anonymity tools (such as a ] or the ]) to mask their identities online and pose as criminals.<ref>{{Cite journal|last=Ghappour|first=Ahmed|date=2017-01-01|title=Tallinn, Hacking, and Customary International Law|url=https://scholarship.law.bu.edu/faculty_scholarship/206|journal=AJIL Unbound|volume=111|pages=224–228|doi=10.1017/aju.2017.59|s2cid=158071009|doi-access=free|access-date=2020-09-06|archive-date=2021-04-20|archive-url=https://web.archive.org/web/20210420111518/https://scholarship.law.bu.edu/faculty_scholarship/206/|url-status=live |issn=2398-7723}}</ref><ref>{{Cite journal|last=Ghappour|first=Ahmed|date=2017-04-01|title=Searching Places Unknown: Law Enforcement Jurisdiction on the Dark Web|url=https://scholarship.law.bu.edu/faculty_scholarship/204|journal=Stanford Law Review|volume=69|issue=4|pages=1075|access-date=2020-09-06|archive-date=2021-04-20|archive-url=https://web.archive.org/web/20210420104454/https://scholarship.law.bu.edu/faculty_scholarship/204/|url-status=live}}</ref>


Hacking can also have a broader sense of any roundabout solution to a problem, or programming and hardware development in general, and ] has spread the term's broader usage to the general public even outside the profession or hobby of electronics (see ]).
A '''Hacker''' is a general term in computing that refers to a computer programmer who takes advantage of the faults in the design of computer software or hardware (commonly referred to as "weaknesses") in order to:


== Definitions ==
# gain further knowledge about the internal workings of the software or hardware,
{{Further|Security hacker|White hat (computer security)|Black hat (computer security)|Grey hat}}
# gain access to some previously locked or hidden function of the software or hardware,
# disable some previously functioning part of the software or hardware so that it no longer works in the way it was originally intended, or
# command the software or hardware to perform an additional task that it was not originally designed to do.


Reflecting the two types of hackers, there are two definitions of the word "hacker":
As a hacker's activities commonly (but not always) involve reverse engineering{{ref label|reverseengineer|Note 8|8}} or direct modification of the software or hardware without the manufacturer's knowledge or authorisation, hacking often violates existing Copyright and Patent laws<ref name="copyrights">United States Department of Justice - </ref> in many countries. A hacker's activities also frequently include the exploitation of a weakness in software or hardware to, for example, command the software or hardware to perform a malicious action against an individual or organisation. While reverse engineering software or hardware to gain further knowledge about its internal may not be considered a crime, malicious acts arising from the exploitation of any weaknesses found are considered crimes and are even considered as terrorist acts in some countries<ref name="terrorhack">United Kingdom Office of Public Sector Information - </ref>. For these reasons, hacking, the activity of a hacker, is considered a crime under law in most countries especially . Numerous hackers have been, and continue to be, prosecuted<ref name="prevcases">United States Department of Justice, Computer Crime & Intellectual Property Section - </ref><ref name="pressreleases">United States Department of Justice, Computer Crime and Intellectual Property Section - </ref> for their actions, some even becoming infamous through the reporting of their activities in the media.


# Originally, hacker simply meant advanced computer technology enthusiast (both hardware and software) and adherent of programming subculture; see ].<ref>{{Cite book|title=]|year=1984}}</ref>
The word '''Hacker''' is a general term within the field of computing and there are more specific terms in use, particularly just within the United States, to describe the different types of hackers and the different kinds of software and hardware that they find weaknesses in. These different types of hackers are listed briefly in '''Section 6''' of this arcticle, however, to read in detail about these different kinds of hackers, please consult ] or ].
# Someone who is able to subvert ]. If doing so for malicious purposes, the person can also be called a ].{{ref RFC|1983}}


Mainstream usage of "hacker" mostly refers to computer criminals, due to the mass media usage of the word since the 1990s.<ref>{{Cite web | url = https://www.cnet.com/news/in-95-these-people-defined-tech-gates-gosling-bezos-mitnick-and-more/ | title = In '95, these people defined tech: Gates, Bezos, Mitnick and more | access-date = 2020-05-28 | first = Jon | last = Skillings | date = 2020-05-27 | website = ] | quote = The term "hacker" started out with a benign definition: It described computer programmers who were especially adept at solving technical problems. By the mid-1990s, however, it was widely used to refer to those who turned their skills toward breaking into computers, whether for mild mischief or criminal gain. Which brings us to ]. | archive-url = https://web.archive.org/web/20200528205149/https://www.cnet.com/news/in-95-these-people-defined-tech-gates-gosling-bezos-mitnick-and-more/ | archive-date = 2020-05-28 | df = dmy-all }}</ref> This includes what hacker jargon calls ]s, less skilled criminals who rely on tools written by others with very little knowledge about the way they work.<ref>{{cite journal |author=Samuel Chng |author2=Han Yu Lu |author3=Ayush Kumar |author4=David Yau |date=Mar 2022 |title=Hacker types, motivations and strategies: A comprehensive framework |journal=Computers in Human Behavior Reports |volume=5 |issn=2451-9588 |pages= |doi=10.1016/j.chbr.2022.100167 |doi-access=free }}</ref> This usage has become so predominant that the general public is largely unaware that different meanings exist.<ref>{{cite magazine|last1=Yagoda|first1=Ben|title=A Short History of "Hack"|url=http://www.newyorker.com/tech/elements/a-short-history-of-hack|magazine=The New Yorker|access-date=November 3, 2015|archive-date=November 10, 2015|archive-url=https://web.archive.org/web/20151110004249/http://www.newyorker.com/tech/elements/a-short-history-of-hack|url-status=live}}</ref> Though the self-designation of hobbyists as hackers is generally acknowledged and accepted by computer security hackers, people from the programming subculture consider the computer intrusion related usage incorrect, and emphasize the difference between the two by calling security breakers "crackers" (analogous to a ]).


The controversy is usually based on the assertion that the term originally meant someone messing about with something in a positive sense, that is, using playful cleverness to achieve a goal. But then, it is supposed, the meaning of the term shifted over the decades and came to refer to computer criminals.{{ref RFC|1392}}


As the security-related usage has spread more widely, the original meaning has become less known. In popular usage and in the media, "computer intruders" or "computer criminals" is the exclusive meaning of the word. In computer enthusiast and hacker culture, the primary meaning is a complimentary description for a particularly brilliant programmer or technical expert. A large segment of the technical community insist the latter is the correct usage, as in the ] definition.
__TOC__


Sometimes, "hacker" is simply used synonymously with "]": "A true hacker is not a group person. He's a person who loves to stay up all night, he and the machine in a love-hate relationship... They're kids who tended to be brilliant but not very interested in conventional goals It's a term of derision and also the ultimate compliment."<ref>] quoted in ], "S P A C E W A R: Fanatic Life and Symbolic Death Among the Computer Bums:" In '']'' (1972)</ref>


] thinks that "the common theory that 'hacker' originally was a benign term and the malicious connotations of the word were a later perversion is untrue." He found that the malicious connotations were already present at MIT in 1963 (quoting '']'', an MIT student newspaper), and at that time referred to unauthorized users of the telephone network,<ref name="shapiro">Fred Shapiro: {{webarchive|url=https://web.archive.org/web/20071025200829/http://listserv.linguistlist.org/cgi-bin/wa?A2=ind0306B&L=ads-l&P=R5831&m=24290 |date=2007-10-25 }}. ''American Dialect Society Mailing List'' (13. June 2003)</ref><ref>{{Cite web|url=https://imranontech.com/2008/04/01/the-origin-of-hacker/|title=The Origin of "Hacker"|date=April 1, 2008|access-date=March 1, 2021|archive-date=March 4, 2021|archive-url=https://web.archive.org/web/20210304085653/https://imranontech.com/2008/04/01/the-origin-of-hacker/|url-status=live}}</ref> that is, the ] movement that developed into the computer security hacker subculture of today.


=== Civic hacker ===
==Overview==
Civic hackers use their security and/or ] to create solutions, often public and ], addressing challenges relevant to neighborhoods, cities, states or countries and the infrastructure within them.<ref>* {{Cite web |date=2013-05-15 |title=What is a Civic Hacker? |url=https://digital.gov/2013/05/15/what-is-a-civic-hacker/ |access-date=2023-11-03 |website=Digital.gov |language=en-US |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065348/https://digital.gov/2013/05/15/what-is-a-civic-hacker/ |url-status=live }}
The hacker of the late 1950s to the early 1970s was originally known for applying expertise and skill to getting the maximum benefit out of hardware and software. These hackers were computer enthusiasts who were highly respected and their skills helped the software and hardware industries to advance very quickly in the early days of computing. However, hackers in general quickly became associated with crime as some of them applied their considerable expertise to illegal activities such as:
* {{Cite magazine |last=Finley |first=Klint |title=White House, NASA Celebrate National Day of Hacking |language=en-US |magazine=Wired |url=https://www.wired.com/2013/05/national-day-of-hacking/ |access-date=2023-11-03 |issn=1059-1028 |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065348/https://www.wired.com/2013/05/national-day-of-hacking/ |url-status=live }}</ref> Municipalities and major government agencies such as ] have been known to host ]s or promote a specific date as a "National Day of Civic Hacking" to encourage participation from civic hackers.<ref>* {{Cite web |last=Abegail |date=2016-06-04 |title=Join Us for National Day of Civic Hacking |url=https://www.chhs.ca.gov/blog/2016/06/03/join-us-for-national-day-of-civic-hacking/ |access-date=2023-11-03 |website=California Health and Human Services |language=en-US }}
* {{Cite web |date=2016-06-03 |title=Open Data and Innovation at the National Day of Civic Hacking 2016 |url=https://obamawhitehouse.archives.gov/blog/2016/06/03/open-data-and-innovation-national-day-civic-hacking-2016 |access-date=2023-11-03 |website=whitehouse.gov |language=en |archive-date=2023-06-02 |archive-url=https://web.archive.org/web/20230602153858/https://obamawhitehouse.archives.gov/blog/2016/06/03/open-data-and-innovation-national-day-civic-hacking-2016 |url-status=live }}
* {{Cite web |title=Time To Make Plans For June's National Day of Civic Hacking - IEEE Spectrum |url=https://spectrum.ieee.org/time-to-make-plans-for-junes-national-day-of-civic-hacking |access-date=2023-11-03 |website=] |language=en |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065350/https://spectrum.ieee.org/time-to-make-plans-for-junes-national-day-of-civic-hacking |url-status=live }}
* {{Cite web |last=Hong |first=Albert |date=2016-06-08 |title=National Day of Civic Hacking is about 'civic bravery' |url=https://technical.ly/civic-news/national-day-civic-hacking-secondmuse/ |access-date=2023-11-03 |website=Technical.ly |language=en |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065348/https://technical.ly/civic-news/national-day-civic-hacking-secondmuse/ |url-status=live }}
* {{Cite web |date=2013-05-31 |title=Government releases 'unprecedented amount of data' for National Day of Civic Hacking |url=https://venturebeat.com/entrepreneur/government-releases-unprecedented-amount-of-data-for-national-day-of-civic-hacking/ |access-date=2023-11-03 |website=VentureBeat |language=en-US |archive-date=2022-10-04 |archive-url=https://web.archive.org/web/20221004002300/https://venturebeat.com/entrepreneur/government-releases-unprecedented-amount-of-data-for-national-day-of-civic-hacking/ |url-status=live }}</ref> Civic hackers, though often operating autonomously and independently, may work alongside or in coordination with certain aspects of government or local infrastructure such as trains and buses.<ref>* {{Cite web |last=Gallagher |first=Sean |date=2015-02-25 |title=Bus pass: Civic hackers open transit data MTA said would cost too much to share |url=https://arstechnica.com/information-technology/2015/02/bus-pass-civic-hackers-open-transit-data-mta-said-would-cost-too-much-to-share/ |access-date=2023-11-03 |website=Ars Technica |language=en-us |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065349/https://arstechnica.com/information-technology/2015/02/bus-pass-civic-hackers-open-transit-data-mta-said-would-cost-too-much-to-share/ |url-status=live }}
* {{Cite web |last=Babcock |first=Stephen |date=2015-02-25 |title=Thanks to civic hackers, a Montreal company just made Baltimore's bus system more usable |url=https://technical.ly/software-development/transit-app-civic-hackers-mta-bus-tracking-data-mobile/ |access-date=2023-11-03 |website=Technical.ly |language=en |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065349/https://technical.ly/software-development/transit-app-civic-hackers-mta-bus-tracking-data-mobile/ |url-status=live }}
* {{Cite web |last=Reyes |first=Juliana |date=2014-01-09 |title=This app shows you how often SEPTA Regional Rail is late (with fixes) |url=https://technical.ly/civic-news/septa-regional-rail-late-app/ |access-date=2023-11-03 |website=Technical.ly |language=en |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065358/https://technical.ly/civic-news/septa-regional-rail-late-app/ |url-status=live }}
* {{Cite web |last=Reyes |first=Juliana |date=2014-07-11 |title=Why does this data from our troubled Philadelphia Traffic Court cost $11K? |url=https://technical.ly/civic-news/traffic-court-data-expensive-william-entriken/ |access-date=2023-11-03 |website=Technical.ly |language=en |archive-date=2023-11-03 |archive-url=https://web.archive.org/web/20231103065349/https://technical.ly/civic-news/traffic-court-data-expensive-william-entriken/ |url-status=live }}</ref> For example, in 2008, Philadelphia-based civic hacker ] developed a web application that displayed a comparison of the actual arrival times of local ] trains to their scheduled times after being reportedly frustrated by the discrepancy.<ref>* {{Cite web |last=Lattanzio |first=Vince |date=2014-01-20 |title=Frustrated Over Late SEPTA Trains, Software Developer Creates App Proposing Better Schedules |url=https://www.nbcphiladelphia.com/news/local/frustrated-over-late-septa-trains-software-developer-creates-app-to-recommend-schedule-changes/2113743/ |access-date=2023-11-20 |archive-date=2023-11-20 |archive-url=https://web.archive.org/web/20231120090928/https://www.nbcphiladelphia.com/news/local/frustrated-over-late-septa-trains-software-developer-creates-app-to-recommend-schedule-changes/2113743/ |url-status=live }}
* {{Cite web |last=Reyes |first=Juliana |date=2014-01-09 |title=This app shows you how often SEPTA Regional Rail is late (with fixes) |url=https://technical.ly/civic-news/septa-regional-rail-late-app/ |access-date=2023-11-20 |archive-date=2023-12-04 |archive-url=https://web.archive.org/web/20231204180732/https://technical.ly/civic-news/septa-regional-rail-late-app/ |url-status=live }}
* {{Cite web |last=Metro Magazine Staff |date=2014-01-22 |title=SEPTA rider creates app proposing 'better schedules' |url=https://www.metro-magazine.com/10038748/septa-rider-creates-app-proposing-better-schedules |access-date=2023-11-20 |archive-date=2023-11-20 |archive-url=https://web.archive.org/web/20231120220825/https://www.metro-magazine.com/10038748/septa-rider-creates-app-proposing-better-schedules |url-status=live }}</ref>


=== Security related hacking ===
* the theft of assets (e.g. money<ref name="chicago70m"> - USA Today Newspaper Archives, 19th May 1988</ref> or information<ref name="hackoftheyear_1"> - The Sydney Morning Herald, 15th November, 2007</ref>)
* the use of services (e.g. telephones) without paying, and
* performing malicious deeds against, or causing material damage to, corporations and government institutions (e.g. espionage<ref name="MarkusHess_Ref">Dangerous Decisions: Problem Solving in Tomorrow's World - Enum Mumford. ISBN-13: 978-0306461439. Pages 161-165 (paperback)</ref>{{ref label|MarkusHess_Note|Note 3|3}}).


]s are people involved with circumvention of computer security. There are several types, including:
Within the Computer User clubs and IT-related Universities in the United States of America, there is currently a debate about the usage of the word ''hacker'' within US Academia and there is a proposal that it should only be associated with its original expertise-oriented meaning. To read in detail about this debate, and the issues involved, please see the article ].
==Dawn of the hacker==
As early as the mid 1940s, the American Government was sponsoring projects to build huge mainframe computers to forward research into processors and possible applications of those processors. One such project was a US Navy contract initiated during World War II for a flight simulator computer. The computer took so long to design that, by the time the designs were completed, the war was over and the US Navy had lost interest in the project<ref name="whirlwind"/>. However, the ] (MIT) in Cambridge, Massachusetts, USA, took over the designs and built just the computer. The result was the computer. The MIT Whirwind computer is said to have been the first ever computer to have a full-screen graphical display and it was this feature that led programmers of the huge mainframe (four floors of a two-storey building) to exercise their skills and stretch the capabilities of the computer to perform tasks that it was not originally designed to do. One such programmer, George Yale Cherlin, Ph.D, became famous amongst the Whirlwind project's 175 staff when he and some colleagues together managed to use the military-designed mainframe to create a graphical, real-time, simulation of the physics of a bouncing rubber ball<ref name="whirlwind">Edward Cherlin, and son of George Yale Cherlin, Ph.D, courtesy of </ref>. Cherlin's expertise in programming at that time can certainly be considered one of the earliest acts of hacking in the original good sense of the word.
==First hardware hackers==
While US universities, like MITs Artifical Intelligence Laboratory, continued to push the boundaries of processors and the software running on those processors, industrial applications of the new technology were also being pushed. However, while software was advancing at a very fast pace, the first recorded hacking attempts were on simpler electronic machines that were designed to perform only a single task. Among the first such machines were the part electronic/part mechanical US telephone exchanges and it was in the late 1950s that a young boy called Joe Engressia{{ref label|engressia|Note 4|4a}} first managed to hack one of these exchanges.<ref name="joybubbles">New York Times, 20th August 2007 - "JoyBubbles, 58, Peter Pan of Phone Hackers, Dies" (: delete cookies before viewing)</ref>


;]:Hackers who work to keep data safe from other hackers by finding system ] that can be mitigated. White hats are usually employed by the target system's owner and are typically paid (sometimes quite well) for their work. Their work is not illegal because it is done with the system owner's consent.
Engressia was born in 1949 and was blind from birth<ref name="idletone"/>. As a result of this, however, he was endowed with other amazing talents, one of which was Perfect Pitch. Perfect Pitch is the ability to be able to repeatedly, and exactly, generate a tone of any frequency through singing or whistling. He discovered by accident at the age of just eight years old that the US long-distance{{ref label|longdistance|Note 1|1}} telephone exchanges responded to a special "line-idle tone", a 2600Hz frequency tone internal to exchanges that indicated a long-distance line was available for use<ref name="idletone"> - Gary Robson</ref>. The tone was important as it was used by the exchanges to detect when calls had finished, and therefore was used to calculate telephone bills. If a freephone{{ref label|freephone|Note 5|5}} number was dialled, the local exchange would search for an available long-distance line and mark the call as free. Once the long-distance line had been found, generating the 2600Hz idle tone would make the long-distance exchange think the line was idle and it would stop billing the call. However, the local exchange was still connected and any number dialled would then not be billed. Every time Engressia wanted to make a free long-distance call, he would simply whistle into the telephone receiver and receive his free call.


;] or Cracker:Hackers with malicious intentions. They often steal, exploit, and sell data, and are usually motivated by personal gain. Their work is usually illegal. A cracker is like a black hat hacker,<ref>{{Cite web|title=What are crackers and hackers? {{!}} Security News|url=http://www.pctools.com/security-news/crackers-and-hackers/|url-status=dead|archive-url=https://web.archive.org/web/20110515044743/http://www.pctools.com/security-news/crackers-and-hackers/|archive-date=May 15, 2011|access-date=2016-09-10|website=www.pctools.com}}</ref> but is specifically someone who is very skilled and tries via hacking to make profits or to benefit, not just to vandalize. Crackers find exploits for system vulnerabilities and often use them to their advantage by either selling the fix to the system owner or selling the exploit to other black hat hackers, who in turn use it to steal information or gain royalties.
Soon after, in the early 1970s, another man called discovered the same tone was generated by a toy whistle that came free with boxes of breakfast cereal<ref name="draper">John Draper by , software programmer and Co-Chair of </ref>. Draper blew the whistle into a telephone receiver and also received free calls. Draper become somewhat infamous for envanglesing the technology to be able to cheat the telephone companies without actually using the technology himself. He even gave hacking classes and workshops to his fellow inmates whilst in jail and gave practical demonstrations of his hacking techniques using prison telephones<ref name="draper"/>.


;]:Computer security experts who may sometimes violate laws or typical ], but do not have the malicious intent typical of a black hat hacker.
Both Engressia and Draper were arrested and convicted (Draper on multiple occasions) for their hacking of US telephone exchanges and even became infamous in the local newspapers of the time. Engressia died on August 8th, 2007<ref name="joybubbles"/>{{ref label|engressia|Note 4|4b}}, however, both Engressia's and Draper's activities inspired a whole division of hacking focussed on telephone systems that would later be called ].
==Emergence of software hackers==
During the 1960s and 1970s, computers were too expensive to buy for the majority of normal people. However, this all changed in the late 1970s and the 1980s with the worldwide home computer revolution. Corporations and individuals alike rushed to create machines for hobbyists to use and experiment with in their own homes and many brands like ], ], and ] were born. Many hobbyists rushed out to buy a computer and one such person was a young boy called Kevin Mitnick.


=== Hacker culture ===
Long before he used a computer, Mitnick had already been involved in hacking when in 1976, at the age of just 13, he managed to hack the bus ticket system in his hometown of Los Angeles, USA to get free bus rides<ref name="mitnick_cnn"> - CNN Special Report, 1999</ref>. The system relied on tickets with punched holes in them and Mitnick, using his own specially-made hole punch, was able to cheat ticket machines and travel to any destination he wanted within the Los Angeles area free of charge. By 1982, at the age of 19, he was proficient enough with a computer to be able to hack into the US Government's North American Aerospace Defense Command system (NORAD), a military surveillance system<ref name="mitnick_cnn"/>. Although no damage was done and no criminal charges were brought, it is this incident that is widely believed to have been the inspiration for the 1983 film ''WarGames'', a story about a young boy who hacks into a government computer and accidentally starts a launch countdown for some nuclear missiles. In 1988, however, Mitnick went one step further and hacked into the computers of an IT company and illegally downloaded $1m of the computer company's software<ref name="mitnick_bio"> - Courtesy of Takedown.com</ref>. The case, brought to court by the computer manufacturer ], was sucessfully prosecuted and Mitnick received one year in prison in 1989 for his crime.
{{main|Hacker culture}}


] is an idea derived from a community of enthusiast ]s and ]s in the 1960s around the ]'s (MIT's) ] (TMRC)<ref>{{cite web |last=London |first=Jay |date=6 April 2015 |title=Happy 60th Birthday to the Word "Hack" |url=https://slice.mit.edu/2015/04/06/happy-birthday-hack/ |url-status=dead |archive-url=https://web.archive.org/web/20160507193534/https://slice.mit.edu/2015/04/06/happy-birthday-hack/ |archive-date=7 May 2016 |access-date=16 December 2016}}</ref> and the ].<ref>{{cite web |last=Raymond |first=Eric |author-link=Eric S. Raymond |date=25 August 2000 |title=The Early Hackers |url=http://www.catb.org/~esr/writings/cathedral-bazaar/hacker-history/ar01s02.html |access-date=6 December 2008 |work=A Brief History of Hackerdom |publisher=Thyrsus Enterprises |archive-date=10 October 2008 |archive-url=https://web.archive.org/web/20081010145931/http://www.catb.org/~esr/writings/cathedral-bazaar/hacker-history/ar01s02.html |url-status=live }}</ref> The concept expanded to the hobbyist home computing community, focusing on hardware in the late 1970s (e.g. the ])<ref>Levy, part 2</ref> and on software (]s,<ref>Levy, part 3</ref> ], the ]) in the 1980s/1990s. Later, this would go on to encompass many new definitions such as art, and ].
Mitnick has been jailed on multiple occasions<ref name="mitnick_cnn"/> and his reputation as a hacker, plus the rumour that the 1983 film ''WarGames'' was based on Mitnick's own experiences, has turned him into a cult figure. Mitnick, having served his sentences, now provides his skill and expertise as a security consultant for is own legitimate internet security firm. However, Mitnick has found himself, ironically, the victim of several successful hacking attempts<ref name="mitnick_hacked"> - BBC News Online, 11th February, 2003</ref>, bringing much embarassment to the person they once used to call "the most wanted computer hacker in the world"<ref name="mitnick_cnn"/>.
==Difficulties in prosecuting hackers==
The 1980s and the 1990s saw a revolutionisation in the computer industry that resulted in computers filling every office and touching every aspect of our lives. Whilst technology has continued to advance to bring the world faster and cheaper computers that are in everything from car engines to mobile phones, and the software security to protect those computers has also been advancing, the hackers have also been evolving their techniques to break the new, stronger security.


== Motives ==
In August 2007, a 17-year old teenager named George Hotz hacked a mobile phone so that the software restricting its use to a single mobile phone network was disabled, enabling the phone to be used on any rival mobile phone network<ref name="hotz"> - BBC News Online, 25th August, 2007</ref>. Apple Inc.'s iPhone mobile phone handset was announced in an exclusive partnership will US mobile network provider AT&T Wireless{{ref label|cingular|Note 6|6}} in January 2007<ref name="iphone_announce">Apple Inc. Press Releases - , January 7th 2007</ref>. Although software in the handset made sure that the iPhone could only operate on AT&T Wireless's network, the phone presented a challenge to hackers who wanted to use the phone on other providers' networks. Hotz was the first person to hack the phone using a combination of software and hardware modifications and he demonstrated his modified iPhone handset working on AT&T Wireless's rival ]'s network.
Four primary motives have been proposed as possibilities for why hackers attempt to break into computers and networks. First, there is a criminal financial gain to be had when hacking systems with the specific purpose of stealing ]s or manipulating ]s. Second, many hackers thrive off of increasing their reputation within the hacker subculture and will leave their handles on websites they defaced or leave some other evidence as proof that they were involved in a specific hack. Third, ] allows companies to acquire information on products or services that can be stolen or used as leverage within the marketplace. Lastly, state-sponsored attacks provide nation states with both wartime and intelligence collection options conducted on, in, or through ].<ref>Lloyd, Gene. "Developing Algorithms to Identify Spoofed Internet Traffic". Colorado Technical University, 2014</ref>


== Overlaps and differences ==
Whilst Hotz was congratulated by hacking communities everywhere, Apple and AT&T Wireless were not happy, although Hotz appears to have been spared going to court when he stated in interviews that he didn't want to sell his hack<ref name="hotz"/>. Instead, he was consulted by Apple as to the nature of the hack and Apple soon released an update to the phone's software that was claimed not to include the weaknesses that Hotz had managed to exploit. However, companies and other hacking firms that did try and sell Hotz's hack were approached by Apple's lawyers who successfully blocked the firms from selling the hack citing copyright infringment and reverse engineering<ref name="iphone_hack"> - BBC News Online, 28th August 2007</ref>, something that is considered illegal through such legislation as the United States ] <ref name="dmca">
], maintainer of the '']'' and proponent of hacker culture]]
, U.S. Copyright Office Summary - Library of Congress</ref>.
The main basic difference between programmer subculture and computer security hacker is their mostly separate historical origin and development. However, the ''Jargon File'' reports that considerable overlap existed for the early phreaking at the beginning of the 1970s. An article from MIT's student paper ''The Tech'' used the term hacker in this context already in 1963 in its pejorative meaning for someone messing with the phone system.<ref name=shapiro/> The overlap quickly started to break when people joined in the activity who did it in a less responsible way.<ref>{{cite book |url=http://catb.org/~esr/jargon/html/P/phreaking.html |title=phreaking |series=The Jargon Lexicon |access-date=2008-10-18 |archive-date=2008-09-21 |archive-url=https://web.archive.org/web/20080921080316/http://www.catb.org/~esr/jargon/html/P/phreaking.html |url-status=live }}</ref> This was the case after the publication of an article exposing the activities of Draper and Engressia.


According to Raymond, hackers from the programmer subculture usually work openly and use their real name, while computer security hackers prefer secretive groups and identity-concealing aliases.<ref name="Raymond-cracker" /> Also, their activities in practice are largely distinct. The former focus on creating new and improving existing infrastructure (especially the software environment they work with), while the latter primarily and strongly emphasize the general act of circumvention of security measures, with the effective use of the knowledge (which can be to report and help fixing the security bugs, or exploitation reasons) being only rather secondary. The most visible difference in these views was in the design of the MIT hackers' ], which deliberately did not have any security measures.
Hotz's actions highlighted the difficulties that software and hardware companies face when trying to prevent hackers from reverse engineering their work. While corporations struggle to protect their inventions and business strategies, hackers everywhere are struggling equally hard to try and reverse engineer those inventions for their own profit or gain. One of the reasons why Hotz wasn't brought to trial was because of sections of the US Digital Millenium Copyright Act<ref name="dmca"/> that appear to permit software or hardware to be reverse engineered and modified without the original manufacturer's consent, where the modification allows the product to interoperate with other programs<ref name="dmca_reverse">
, U.S. Copyright Office Summary - Library of Congress. Page 5, exception 2</ref> ''in the manner for which it was originally intended''{{ref label|fairuse|Note 2|2}}<ref name="fairuse">Library of Congress, United States Copyright Office - </ref>. This was important, as Apple's iPhone was originally designed to be used on every provider's network in the world although ''this design was limited to AT&T's network'' using special security software. Thus, as Hotz's modifications to the iPhone did not change the iPhone's original purpose, and the modifications allowed the phone to interoperate with another provider's network, both Apple and AT&T found it difficult to prosecute the teenager, a situation that neither corporation was happy about.


There are some subtle overlaps, however, since basic knowledge about computer security is also common within the programmer subculture of hackers. For example, Ken Thompson noted during his 1983 ] lecture that it is possible to add code to the ] "login" command that would accept either the intended encrypted ] or a particular known password, allowing a backdoor into the system with the latter password. He named his invention the "]". Furthermore, Thompson argued, the ] itself could be modified to automatically generate the rogue code, to make detecting the modification even harder. Because the compiler is itself a program generated from a compiler, the Trojan horse could also be automatically installed in a new compiler program, without any detectable modification to the source of the new compiler. However, Thompson disassociated himself strictly from the computer security hackers: "I would like to criticize the press in its handling of the 'hackers,' the ], the Dalton gang, etc. The acts performed by these kids are vandalism at best and probably trespass and theft at worst. ... I have watched kids testifying before Congress. It is clear that they are completely unaware of the seriousness of their acts."<ref>{{cite journal|first=Ken|last=Thompson|title=Reflections on Trusting Trust|journal=Communications of the ACM|volume=27|issue=8|date=August 1984|url=http://www.ece.cmu.edu/~ganger/712.fall02/papers/p761-thompson.pdf|doi=10.1145/358198.358210|page=761|s2cid=34854438|doi-access=free|access-date=2007-08-24|archive-date=2007-09-24|archive-url=https://web.archive.org/web/20070924124136/http://www.ece.cmu.edu/~ganger/712.fall02/papers/p761-thompson.pdf|url-status=live}}</ref>
Increasingly, hackers are avoiding prosecution by being hired by corporations to deliberately find the weaknesses in their software or hardware as this is often cheaper than having their system breached and losing the confidence of customers<ref name="MPAAhacker"> - Financial Post, 22nd October, 2007</ref>. Hotz is one such person who, by agreeing to co-operate with Apple in explaining the nature of his hack, caused both Hotz and Apple to benefit from what was initially a very serious situation.
==Evolution of the hacker==
As the software industry has evolved over time, it has become an industry with many different areas of expertise. Along with the expansion of the industry has come an expansion in the number of specific terms in use, particularly just within the United States, to describe the different types of hackers and the different kinds of software and hardware that they focus on.


The programmer subculture of hackers sees secondary circumvention of security mechanisms as legitimate if it is done to get practical barriers out of the way for doing actual work. In special forms, that can even be an expression of playful cleverness.<ref>{{cite web |url=https://www.gnu.org/philosophy/rms-hack.html |title=The Hacker Community and Ethics: An Interview with Richard M. Stallman |publisher=GNU Project |author=Richard Stallman |year=2002 |access-date=2008-10-18 |archive-date=2021-03-07 |archive-url=https://web.archive.org/web/20210307234742/https://www.gnu.org/philosophy/rms-hack.html |url-status=live }}</ref> However, the systematic and primary engagement in such activities is not one of the actual interests of the programmer subculture of hackers and it does not have significance in its actual activities, either.<ref name="Raymond-cracker">{{cite book |url=http://catb.org/~esr/jargon/html/C/cracker.html |title=cracker |series=The Jargon Lexicon |access-date=2008-10-18 |archive-date=2008-09-15 |archive-url=https://web.archive.org/web/20080915184607/http://www.catb.org/~esr/jargon/html/C/cracker.html |url-status=live }}</ref> A further difference is that, historically, members of the programmer subculture of hackers were working at academic institutions and used the computing environment there. In contrast, the prototypical computer security hacker had access exclusively to a home computer and a modem. However, since the mid-1990s, with home computers that could run Unix-like operating systems and with inexpensive internet home access being available for the first time, many people from outside of the academic world started to take part in the programmer subculture of hacking.
The different types of hacker that exist today are listed in the table below.


Since the mid-1980s, there are some overlaps in ideas and members with the computer security hacking community. The most prominent case is Robert T. Morris, who was a user of MIT-AI, yet wrote the ]. The ''Jargon File'' hence calls him "a true hacker who blundered".<ref>{{cite book |url=http://catb.org/jargon/html/pt03.html#bibliography |title=Part III. Appendices |series=The Jargon Lexicon |access-date=2008-10-18 |archive-date=2008-09-13 |archive-url=https://web.archive.org/web/20080913155658/http://www.catb.org/jargon/html/pt03.html#bibliography |url-status=live }}</ref> Nevertheless, members of the programmer subculture have a tendency to look down on and disassociate from these overlaps. They commonly refer disparagingly to people in the computer security subculture as crackers and refuse to accept any definition of hacker that encompasses such activities. The computer security hacking subculture, on the other hand, tends not to distinguish between the two subcultures as harshly, acknowledging that they have much in common including many members, political and social goals, and a love of learning about technology. They restrict the use of the term cracker to their categories of ]s and black hat hackers instead.


], a long-running ] for hackers]]
All three subcultures have relations to hardware modifications. In the early days of network hacking, phreaks were building ]es and various variants. The programmer subculture of hackers has stories about several hardware hacks in its folklore, such as a mysterious "magic" switch attached to a PDP-10 computer in MIT's AI lab that, when switched off, crashed the computer.<ref>{{cite book |url=http://catb.org/~esr/jargon/html/magic-story.html |title=A Story About 'Magic' |series=The Jargon Lexicon |access-date=2008-10-18 |archive-date=2008-09-13 |archive-url=https://web.archive.org/web/20080913164649/http://catb.org/~esr/jargon/html/magic-story.html |url-status=live }}</ref> The early hobbyist hackers built their home computers themselves from construction kits. However, all these activities have died out during the 1980s when the phone network switched to digitally controlled switchboards, causing network hacking to shift to dialing remote computers with modems when pre-assembled inexpensive home computers were available and when academic institutions started to give individual mass-produced workstation computers to scientists instead of using a central timesharing system. The only kind of widespread hardware modification nowadays is ].


An encounter of the programmer and the computer security hacker subculture occurred at the end of the 1980s, when a group of computer security hackers, sympathizing with the ] (which disclaimed any knowledge in these activities), broke into computers of American military organizations and academic institutions. They sold data from these machines to the Soviet secret service, one of them in order to fund his drug addiction. The case was solved when ], a scientist working as a system administrator, found ways to log the attacks and to trace them back (with the help of many others). '']'', a German film adaption with fictional elements, shows the events from the attackers' perspective. Stoll described the case in his book '']'' and in the TV documentary ''The KGB, the Computer, and Me'' from the other perspective. According to Eric S. Raymond, it "nicely illustrates the difference between 'hacker' and 'cracker'. Stoll's portrait of himself, his lady Martha, and his friends at Berkeley and on the Internet paints a marvelously vivid picture of how hackers and the people around them like to live and how they think."<ref>{{cite book |url=http://catb.org/jargon/html/pt03.html |title=Part III. Appendices |series=The Jargon Lexicon |access-date=2008-10-18 |archive-date=2008-09-13 |archive-url=https://web.archive.org/web/20080913155658/http://www.catb.org/jargon/html/pt03.html |url-status=live }}</ref>
{| cellpadding="10"
|+
! Hacker&nbsp;Type !! Explanation
|-
| ]
| A Black Hat hacker concentrates on finding, and exploiting, the weaknesses in systems in order to perform malicious acts or to cause some kind of injury. All activities of the Black Hat hackers are considered crimes and so, where possible, prosecutions have, and continue to be, brought against this kind of hacker.
|-
| ]
| A Computer Security Hacker is someone who specializes in work with the security mechanisms for computer and network systems. Particularly within the US, the subculture around such hackers is termed "network hacker subculture", "hacker scene" or "computer underground".
|-
| Cracker
| A Cracker is a person who concentrates on finding weakesses in the security-related parts of software and hardware in order to disable the security and allow unauthorised use. Most activities of the cracker are illegal, however, they often go unprosecuted as the people whose software has been compromised have neither the resources nor the time to persue them.
|-
| ]
| A Phreaker concentrates on finding, and exploiting, the weaknesses in telephone systems.
|-
| ]
| An Open Source Hacker is a person who enjoys designing software and building programs with a sense for aesthetics and playful cleverness. These hackers have been responsible for creating the Open Source movement, a collection of computer programmers who collectively write software that is free to use and distribute.
|-
| ]
| A White Hat hacker concentrates on finding the weaknesses in systems in order that the systems themselves may be fixed. These hackers are sometimes hired by corporations to find weaknesses in the corporation's own products and so are not prosecuted for their work.
|}


== Representation in media ==
The ]'s current usage of the term may be traced back to the early 1980s. When the term, previously used only among computer enthusiasts, was introduced to wider society by the mainstream media in 1983,<ref>{{Cite web|last=Deffree|first=Suzanne|date=2019-09-05|title=EDN - 'Hacker' is used by mainstream media, September 5, 1983|url=https://www.edn.com/hacker-is-used-by-mainstream-media-september-5-1983/|access-date=2020-09-07|website=EDN|language=en-US|archive-date=2020-04-29|archive-url=https://web.archive.org/web/20200429123857/https://www.edn.com/hacker-is-used-by-mainstream-media-september-5-1983/|url-status=live}}</ref> even those in the computer community referred to computer intrusion as hacking, although not as the exclusive definition of the word. In reaction to the increasing media use of the term exclusively with the criminal connotation, the computer community began to differentiate their terminology. Alternative terms such as ] were coined in an effort to maintain the distinction between hackers within the legitimate programmer community and those performing computer break-ins. Further terms such as ], ] and ] developed when laws against breaking into computers came into effect, to distinguish criminal activities from those activities which were legal.


] use of the term consistently pertains primarily to criminal activities, despite attempts by the technical community to preserve and distinguish the original meaning. Today, the mainstream media and general public continue to describe computer criminals, with all levels of technical sophistication, as "hackers" and do not generally make use of the word in any of its non-criminal connotations. Members of the media sometimes seem unaware of the distinction, grouping legitimate "hackers" such as ] and ] along with criminal "crackers".<ref>{{cite web|last=DuBois|first=Shelley|title=A who's who of hackers|url=http://tech.fortune.cnn.com/2011/06/16/a-whos-who-of-hackers/|url-status=dead|archive-url=https://web.archive.org/web/20110619062251/http://tech.fortune.cnn.com/2011/06/16/a-whos-who-of-hackers/|archive-date=June 19, 2011|access-date=19 June 2011|work=Reporter|publisher=Fortune Magazine}}</ref>


As a result, the definition is still the subject of heated controversy. The wider dominance of the pejorative connotation is resented by many who object to the term being taken from their cultural ] and used negatively,<ref>{{cite web|url=http://tmrc.mit.edu/hackers-ref.html |title=TMRC site |archive-url=https://web.archive.org/web/20060503072049/http://tmrc.mit.edu/hackers-ref.html |archive-date=2006-05-03}}</ref> including those who have historically preferred to self-identify as hackers. Many advocate using the more recent and nuanced alternate terms when describing criminals and others who negatively take advantage of security flaws in software and hardware. Others prefer to follow common popular usage, arguing that the positive form is confusing and unlikely to become widespread in the general public. A minority still use the term in both senses despite the controversy, leaving context to clarify (or leave ambiguous) which meaning is intended.
As the number of hackers has increased, and the seriousness of the hacker's crimes has also increased, groups of programmers within US Academia and the homebrew clubs{{ref label|homebrew|Note 7|7}} have been trying to distiguish and distance themselves from the criminal hackers and the criminal image of hacking. These groups are trying to reestablish the use of the general word "hacker" in its original sense - i.e. as a person who exercises great skill in creating or modifying software and getting the maximum benefit out of it. To read about this discussion in detail, please read ].
==Techniques of the hacker==
There are many techniques that the Hacker uses to engage in his or her activities, and new methods are being continuously being devised and discovered. Each method is designed to exploit a particular kind of weakness and a hacker may use one method, or many methods in combination with each other, to achieve their objective.


However, because the positive definition of hacker was widely used as the predominant form for many years before the negative definition was popularized, "hacker" can therefore be seen as a ], identifying those who use the technically oriented sense (as opposed to the exclusively intrusion-oriented sense) as members of the computing community. On the other hand, due to the variety of industries software designers may find themselves in, many prefer not to be referred to as hackers because the word holds a negative denotation in many of those industries.
Although there are many different techniques and technologies, most techniques can be split into a small number of distinct categories which are listed below:


A possible middle ground position has been suggested, based on the observation that "hacking" describes a collection of skills and tools which are used by hackers of both descriptions for differing reasons. The analogy is made to ], specifically picking locks, which is a skill which can be used for good or evil. The primary weakness of this analogy is the inclusion of ] in the popular usage of "hacker", despite their lack of an underlying skill and knowledge base.


== See also ==
{| cellpadding="10"
*], an unskilled computer security attacker
! Technique !! Explanation
*], conducting cyber attacks on a business or organisation in order to bring social change
|-
! ]
|
{| class="wikitable"
|-
| What&nbsp;is&nbsp;it?
| A Trojan Horse is any piece of software that gives the impression it is doing a particular task when, in fact, it is secretly performing a much more malicious task. The software will often look appealing and is designed to be welcoming, however this is merely a trick to divert the attention of the user while the real malicous work is being secretly being performed. The hacker typically uses a Trojan Horse when something needs to be illegally installed on a user's computer, or something needs to be illegally acquired from a user's computer.
|-
| Why&nbsp;the&nbsp;name?
| In Greek Mythology<ref name="mythology>The Library of Greek Mythology - Apollodorus (translation by Robin Hard) ISBN-13: 978-0192839244</ref>, a long war was fought at a city called Troy. The army trying to gain entrance to the city were on a mission to rescue a lady called Helen who was being kept a hostage within the city. After nine years and still no success, a man called ], a member of the army trying to enter the city, had the idea to build a large wooden horse and offer it as a "gift" to the people of Troy to convince the city's leaders that they had given up. When the horse was completed, it was left outside Troy's city walls and the attacking army returned to their ships and left. Seeing the ships leave, Troy's leaders accepted the horse. However, Odysseus had hidden a group of the army's best soldiers inside the horse. Once inside the city's defensive walls, the soldiers jumped out of the horse and sprung their attack on the city from the inside, surprising their opposition and rescuing Helen. Thus, software that copies Odysseus's technique of using a disguise to hide the real task to be done is called a Trojan Horse.
|-
| Example
| Spyware is a common type of Trojan Horse. Spyware is software that gives the impression it is offering some kind of (often free) service but is actually secretly stealing personal information from the user's computer and transmitting it over the internet to another location. After the hacker steals the information, they either use it to perform more malicous deeds against the user or they just sell it on for profit.
|}
|-
! ]
|
{| class="wikitable"
|-
| What&nbsp;is&nbsp;it?
| A virus is a piece of software that can copy itself and then transmit itself to another computer, where it then copies itself again. The virus is normally embedded into another piece of software (the ''host software'') and is therefore hidden from view. Once embedded inside the host software, the virus uses the normal functions of the host software to copy itself, only becoming visible when the copies of the virus are transmitted to other computers. The chain of replication is normally very difficult to break and the number of computers that become infected with such software can increase very rapidly. As a virus relies on the host software to function, viruses can be very small programs and can be very simple to create. The hacker favours viruses when small size and simplicity are desired.
|-
| Why&nbsp;the&nbsp;name?
| In the human body, viruses operate by hiding inside cells so that they become hidden from the view of the body's natural defences<ref name="virus"> - Craig C. Freudenrich, Ph.D. Courtesy of </ref>. They either copy themselves inside the cell, or they sleep and are copied when the cell naturally copies itself. After the virus has been copied many times through either method, each separate copy of the virus leaves its host cell and then goes to find a new cell, starting the cycle again. The virus only becomes visible when the copies exit the host cell, not while it's being copied. This means the body's natural defenses are sometimes not able to detect the virus until copies of the virus are too numerous to stop.
|-
| Example
| Email "Address Book" viruses were, and still are, amongst the most common of software viruses. The virus uses the address book of a user's email application to target users that it will infect next. The virus then attaches itself to an email and uses the normal functions of the email application to email a copy of itself to each selected target. When the virus email is received, the virus relies on the email application to copy itself again (for example, when the user opens the email). Users who often believe they are safe by not opening the email's contents (e.g. an attachment) unknowingly help the virus to spread just by opening the email. A hacker uses a virus to deliver some kind of message or program to the largest number of computers in the smallest amount of time. After the computers have been infected, the hacker may use the delivered messages or programs to perform additional damage to infected computers.
|}
|-
! ]
|
{| class="wikitable"
|-
| What&nbsp;is&nbsp;it?
| A worm is a piece of software that can copy itself and then transmit itself to another computer, where it copies itself again. A worm is different from a virus in that it does not need to rely on host software to spread. A worm contains all of the copying function within itself. A hacker uses a worm to alter or disable a computer's functions without causing the computer to stop or display any kind of physical problem and this means that the effects of a worm can go unnoticed for a significant amount of time. During this time, the computer may become vulnerable to, or a participant in, an external attack by the hacker who is then able to exploit the computer to gain unauthorised access or to perform some other malicious action.
|-
| Why&nbsp;the&nbsp;name?
| John Brunner wrote a novel in 1975 called ] <ref name="shockwave_rider">The Shockwave Rider - John Brunner ISBN-13: 978-0345324313</ref>, in which he described the idea of a Computer Tapeworm based on the biological Tapeworm parasite. Brunner's worms entered a computer system and lived invisibly within a computer, spreading themselves by attaching to any kind of data that was transmitted to another machine. In 1978<ref name="xerox_parc">Xerox Parc - </ref>, two reseachers at ], in Palo Alto, California, USA, actually wrote a worm program to usefully utilise a computer system's "spare" resources at the times when a system was not 100% busy<ref name="xerox_paper">The "Worm" Programs - early experience with a distributed computation. Shoch, J.F and Hupp, J.A. </ref>. The worm used only the spare resources to do useful work, and to spread itself to other computers so that more work could be done. However, now worms often use a computer's spare resources in order to perform malicous tasks like launching attacks on other computers, or consuming more resources than are actually available (causing the infected computer to operate many times slower).
|-
| Example
| In 2003, a worm called Blaster<ref name="blaster">Symantec Corporation: Security Responses - </ref> was created which copied itself when the computer was connected to the internet, even if the user was not actually performing an internet-related action. The worm activities went unnoticed on millions of users' computers as most of the time it did no real work; the worm was just waiting until a pre-programmed time. The actual effect of the worm was that computers infected with the worm waited until August 15th 2003 at which time they all attacked ]'s Online Update website in unison in order to try and disrupt Microsoft's services.
|}
|}
==Influence of hackers on everyday society==
The effect of hackers on the way we live our lives has been significant. Software, although reliable at performing the same task identically millions and millions of times, now has to be protected against hackers who want to modify it so it repeatedly performs a different, often malicious, task. Furthermore, as the protection that is used is itself a target for the hackers, technology that can automatically detect when the security has been broken has also had to be developed (for example, a CD player detects when a copy of a CD is being played instead of the original purchased CD).


== References ==
In the modern world, software is operating every minute of every day making sure that actions performed by machines on behalf of individuals are only performed when properly authorised to do so. For example, the action of withdrawing money from a bank using a card must only be done by the authorised card holder, and special software in the form of ] attempts to protect stolen bank cards from being used. Another example might be a company who wants to protect the copyright of its products and in this case the software could be protecting the product from being copied illegally, or from being used in a manner that the company explicitly forbids (like using a mobile phone handset on another company's network). At the same time, however, hackers are trying their best to devise new techniques based on Trojan Horses, Viruses, and Worms to find and exploit weaknesses in software so that they can use your stolen bank card or they can use that mobile phone on another provider's network. Thanks to the skill and expertise of engineers in the IT industry, though, this conflict remains largely hidden and does not affect normal people in all but the most extreme cases.
{{Reflist}}


== Further reading ==
As hackers' techniques advance further still<ref name="wirelesshackers"> - National Post, 6th December, 2007</ref>, software design is also advancing so that software can withstand the attempts of hackers to reverse engineer or modify the software. One of the biggest challenges facing all sections of the computer industry is how to implement software so that the copyright of works, or access to personal information, can be protected from hackers without making software products so complicated that they become unusable, bringing the lives and jobs of ordinary people to a standstill.
{{refbegin}}
==References==
* Baker, Bruce D. "Sin and the Hacker Ethic: The Tragedy of Techno-Utopian Ideology in Cyberspace Business Cultures." ''Journal of Religion and Business Ethics'' 4.2 (2020): 1+ {{Webarchive|url=https://web.archive.org/web/20230116223623/https://via.library.depaul.edu/cgi/viewcontent.cgi?article=1152&context=jrbe |date=2023-01-16 }}.
{{reflist}}
* Hasse, Michael. {{Webarchive|url=https://web.archive.org/web/20170930174851/http://elk.informatik.hs-augsburg.de/tmp/cdrom-oss/hasse_hacker.pdf |date=2017-09-30 }} (1994)
==Notes==
* Himanen, Pekka. ''The hacker ethic'' (Random House, 2010).
*{{note label|longdistance||1}} Long-distance telephone calls are calls made within the United States where the number being called is in a different state to the caller's number. See ] for more information.
* Himanen, Pekka. "19. The hacker ethic as the culture of the information age." ''The Network Society'' (2004): 420+ {{Dead link|date=June 2024 |bot=InternetArchiveBot |fix-attempted=yes }}.
*{{note label|fairuse||2}} US Copyright Law, of which the ] is an extension, states "fair use" as using a work (in this case, the iPhone hardware and software) in a way that does not infringe the way in which the original author (in this case, Apple Inc.) "expressed themselves". The modified iPhone was identical is appearance, features, and function to the original iPhone, so use of the modified iPhone could have been argued to constitute "fair use".
* Holt, Thomas J. "Computer hacking and the hacker subculture." in ''The palgrave handbook of international cybercrime and cyberdeviance'' (2020): 725–742.
*{{note label|MarkusHess_Note||3}} ], a German hacker who lived in Hanover, Germany, breached the security of at least 24 US military computers between 1986 and 1989. He was jailed for stealing United States military secrets and for later selling the secrets, and the hacking techniques used to steal those secrets, to the KGB in return for money.
{{refend}}
*{{note label|engressia||4a}}{{note label|engressia||4b}} Joe Engressia's legal name was "JoyBubbles" as from 1991.
*{{note label|freephone||5}} Freephone (United Kingdom, Australia), Freecall (New Zealand) or Toll Free (United States, Canada) numbers are telephone numbers that can be dialled free of charge. Typically, these numbers contain the sequence 800 in the code. These numbers are commonly used by companies to provide complementary services, and by governments to provide information and support.
*{{note label|cingular||6}} Users of the iPhone in the United States actually make their contracts with AT&T Wireless. However, the alliance to develop and market the iPhone was between Apple Inc. and Cingular, a US mobile network provider who bought AT&T Wireless in February, 2004. ().
*{{note label|homebrew||7}} A ''homebrew club'' is a term used in the United States to describe a club for computer hobbyists. The name ''homebrew'' is taken from the name of the most famous computer club in the US, the ], where such people as Steve Jobbs and Steve Wozniak (co-founders of ]) were members.
*{{note label|reverseengineer||8}} The opposite of engineering. ''Reverse Engineering'' is the process of examining a finished software or hardware product and taking it apart in order to find out it was originally constructed.
==External Links==
* - The Old Computer Museum (history of most computers manufactured from 1951-1995)
* Symantec Corporation


=== Computer security ===
{{refbegin}}
* Dey, Debabrata, Atanu Lahiri, and Guoying Zhang. "Hacker behavior, network effects, and the security software market."'' Journal of Management Information Systems'' 29.2 (2012): 77–108.
* {{cite book | last = Dreyfus | first = Suelette | title = ] | year = 1997 | isbn = 1-86330-595-5 | publisher = Mandarin }}
* {{cite book |last1=Hafner |first1=Katie |author-link=Katie Hafner |last2=Markoff |first2=John |author-link2=John Markoff |year=1991 |title=Cyberpunk: Outlaws and Hackers on the Computer Frontier |location=New York |publisher=] |isbn=0-671-68322-5 |url=https://archive.org/details/cyberpunk00kati }}
* {{cite book | last = Levy | first = Steven | title = Crypto: How the Code Rebels Beat the Government Saving Privacy in the Digital Age | year = 2002 | isbn = 0-14-024432-8 | publisher = Penguin}}
* Logik Bomb: {{Webarchive|url=https://web.archive.org/web/20070708204945/http://insecure.org/stf/hackenc.txt |date=2007-07-08 }} (1997)
* Revelation: {{Webarchive|url=https://web.archive.org/web/20160905213959/http://www.textfiles.com/hacking/ulimate.txt |date=2016-09-05 }} (1996)
* {{cite book | last = Slatalla | first = Michelle | author2 = Joshua Quittner | title = Masters of Deception: The Gang That Ruled Cyberspace | url = https://archive.org/details/mastersofdecepti1994slat | url-access = registration | year = 1995 | isbn = 0-06-017030-1 | publisher = HarperCollins }}
* {{cite book | author-link = Bruce Sterling | last = Sterling | first = Bruce | url = https://archive.org/details/hackercrackdownl00ster | title = The Hacker Crackdown | year = 1992 | isbn = 0-553-08058-X | publisher = Bantam }}
* {{cite book | last = Taylor | first = Paul A. | title = Hackers: Crime in the Digital Sublime | year = 1999 | isbn = 978-0-415-18072-6 | publisher = Routledge | url = http://insecure.org/stf/them_and_us.txt | access-date = 2009-03-08 | archive-date = 2009-03-09 | archive-url = https://web.archive.org/web/20090309104312/http://insecure.org/stf/them_and_us.txt | url-status = live }}
* {{cite book | last = Thomas | first = Douglas | title = ] | year = 2002 | isbn = 0-8166-3345-2 | publisher = University of Minnesota Press}}
* {{cite book | last = Verton | first = Dan | title = The Hacker Diaries: Confessions of Teenage Hackers | year = 2002 | isbn = 0-07-222364-2 | publisher = McGraw-Hill Osborne Media | url-access = registration | url = https://archive.org/details/hackerdiariescon0000vert }}
{{refend}}


=== Free software/open source ===
{{refbegin}}
* {{cite book | last = Graham | first = Paul| author-link = Paul Graham (computer programmer) | title = ] | year = 2004 | isbn = 0-596-00662-4 | publisher = O'Reilly | location = Beijing}}
* {{cite book | last = Himanen | first = Pekka | year = 2001 | title = The Hacker Ethic and the Spirit of the Information Age | publisher = Random House | isbn = 0-375-50566-0 | url = https://archive.org/details/hackerethic00pekk }}
* {{cite book | last1 = Lakhani | first1 = Karim R. | last2 = Wolf | first2 = Robert G. | chapter-url = http://ocw.mit.edu/courses/sloan-school-of-management/15-352-managing-innovation-emerging-trends-spring-2005/readings/lakhaniwolf.pdf | chapter = Why Hackers Do What They Do: Understanding Motivation and Effort in Free/Open Source Software Projects | editor1-first = J. | editor1-last = Feller | editor2-first = B. | editor2-last = Fitzgerald | editor3-first = S. | editor3-last = Hissam | editor4-first = K. R. | display-editors = 3 | editor4-last = Lakhani | title = Perspectives on Free and Open Source Software | publisher = MIT Press | year = 2005 | access-date = 2016-03-25 | archive-date = 2015-09-23 | archive-url = https://web.archive.org/web/20150923034503/http://ocw.mit.edu/courses/sloan-school-of-management/15-352-managing-innovation-emerging-trends-spring-2005/readings/lakhaniwolf.pdf | url-status = live }}
* {{cite book | last = Levy | first = Steven | author-link = Steven Levy | title = ] | year = 1984 | isbn = 0-385-19195-2 | publisher = Doubleday}}
* {{cite book | editor1-last = Raymond | editor1-first = Eric S. | editor2-last = Steele | editor2-first = Guy L. | title = ] | publisher = The MIT Press | year = 1996 | isbn = 0-262-68092-0}}
* {{cite book | last = Raymond | first = Eric S. | title = ] | publisher = Prentice Hall International | year = 2003 | isbn = 0-13-142901-9}}
* {{cite book | last = Turkle | first = Sherry | author-link = Sherry Turkle | year = 1984 | title = The Second Self: Computers and the Human Spirit | publisher = MIT Press | isbn = 0-262-70111-1}}
{{refend}}


== External links ==
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* {{Wikibooks inline|Hacking}}
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* {{Wiktionary-inline|Hacker}}
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* {{Commons category-inline|Hackers}}
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Latest revision as of 21:11, 20 November 2024

Person skilled in information technology For other uses, see Hacker (disambiguation).

A group of people working on laptop computers at a common table
Participants in the Coding da Vinci hackathon, Berlin, Germany, April 26–27, 2014
Part of a series on
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A hacker is a person skilled in information technology who achieves goals by non-standard means. The term has become associated in popular culture with a security hacker – someone with knowledge of bugs or exploits to break into computer systems and access data which would otherwise be inaccessible to them. In a positive connotation, though, hacking can also be utilized by legitimate figures in legal situations. For example, law enforcement agencies sometimes use hacking techniques to collect evidence on criminals and other malicious actors. This could include using anonymity tools (such as a VPN or the dark web) to mask their identities online and pose as criminals.

Hacking can also have a broader sense of any roundabout solution to a problem, or programming and hardware development in general, and hacker culture has spread the term's broader usage to the general public even outside the profession or hobby of electronics (see life hack).

Definitions

Further information: Security hacker, White hat (computer security), Black hat (computer security), and Grey hat

Reflecting the two types of hackers, there are two definitions of the word "hacker":

  1. Originally, hacker simply meant advanced computer technology enthusiast (both hardware and software) and adherent of programming subculture; see hacker culture.
  2. Someone who is able to subvert computer security. If doing so for malicious purposes, the person can also be called a cracker.

Mainstream usage of "hacker" mostly refers to computer criminals, due to the mass media usage of the word since the 1990s. This includes what hacker jargon calls script kiddies, less skilled criminals who rely on tools written by others with very little knowledge about the way they work. This usage has become so predominant that the general public is largely unaware that different meanings exist. Though the self-designation of hobbyists as hackers is generally acknowledged and accepted by computer security hackers, people from the programming subculture consider the computer intrusion related usage incorrect, and emphasize the difference between the two by calling security breakers "crackers" (analogous to a safecracker).

The controversy is usually based on the assertion that the term originally meant someone messing about with something in a positive sense, that is, using playful cleverness to achieve a goal. But then, it is supposed, the meaning of the term shifted over the decades and came to refer to computer criminals.

As the security-related usage has spread more widely, the original meaning has become less known. In popular usage and in the media, "computer intruders" or "computer criminals" is the exclusive meaning of the word. In computer enthusiast and hacker culture, the primary meaning is a complimentary description for a particularly brilliant programmer or technical expert. A large segment of the technical community insist the latter is the correct usage, as in the Jargon File definition.

Sometimes, "hacker" is simply used synonymously with "geek": "A true hacker is not a group person. He's a person who loves to stay up all night, he and the machine in a love-hate relationship... They're kids who tended to be brilliant but not very interested in conventional goals It's a term of derision and also the ultimate compliment."

Fred Shapiro thinks that "the common theory that 'hacker' originally was a benign term and the malicious connotations of the word were a later perversion is untrue." He found that the malicious connotations were already present at MIT in 1963 (quoting The Tech, an MIT student newspaper), and at that time referred to unauthorized users of the telephone network, that is, the phreaker movement that developed into the computer security hacker subculture of today.

Civic hacker

Civic hackers use their security and/or programming acumens to create solutions, often public and open-sourced, addressing challenges relevant to neighborhoods, cities, states or countries and the infrastructure within them. Municipalities and major government agencies such as NASA have been known to host hackathons or promote a specific date as a "National Day of Civic Hacking" to encourage participation from civic hackers. Civic hackers, though often operating autonomously and independently, may work alongside or in coordination with certain aspects of government or local infrastructure such as trains and buses. For example, in 2008, Philadelphia-based civic hacker William Entriken developed a web application that displayed a comparison of the actual arrival times of local SEPTA trains to their scheduled times after being reportedly frustrated by the discrepancy.

Security related hacking

Security hackers are people involved with circumvention of computer security. There are several types, including:

White hat
Hackers who work to keep data safe from other hackers by finding system vulnerabilities that can be mitigated. White hats are usually employed by the target system's owner and are typically paid (sometimes quite well) for their work. Their work is not illegal because it is done with the system owner's consent.
Black hat or Cracker
Hackers with malicious intentions. They often steal, exploit, and sell data, and are usually motivated by personal gain. Their work is usually illegal. A cracker is like a black hat hacker, but is specifically someone who is very skilled and tries via hacking to make profits or to benefit, not just to vandalize. Crackers find exploits for system vulnerabilities and often use them to their advantage by either selling the fix to the system owner or selling the exploit to other black hat hackers, who in turn use it to steal information or gain royalties.
Grey hat
Computer security experts who may sometimes violate laws or typical ethical standards, but do not have the malicious intent typical of a black hat hacker.

Hacker culture

Main article: Hacker culture

Hacker culture is an idea derived from a community of enthusiast computer programmers and systems designers in the 1960s around the Massachusetts Institute of Technology's (MIT's) Tech Model Railroad Club (TMRC) and the MIT Artificial Intelligence Laboratory. The concept expanded to the hobbyist home computing community, focusing on hardware in the late 1970s (e.g. the Homebrew Computer Club) and on software (video games, software cracking, the demoscene) in the 1980s/1990s. Later, this would go on to encompass many new definitions such as art, and life hacking.

Motives

Four primary motives have been proposed as possibilities for why hackers attempt to break into computers and networks. First, there is a criminal financial gain to be had when hacking systems with the specific purpose of stealing credit card numbers or manipulating banking systems. Second, many hackers thrive off of increasing their reputation within the hacker subculture and will leave their handles on websites they defaced or leave some other evidence as proof that they were involved in a specific hack. Third, corporate espionage allows companies to acquire information on products or services that can be stolen or used as leverage within the marketplace. Lastly, state-sponsored attacks provide nation states with both wartime and intelligence collection options conducted on, in, or through cyberspace.

Overlaps and differences

Eric S. Raymond, maintainer of the Jargon File and proponent of hacker culture

The main basic difference between programmer subculture and computer security hacker is their mostly separate historical origin and development. However, the Jargon File reports that considerable overlap existed for the early phreaking at the beginning of the 1970s. An article from MIT's student paper The Tech used the term hacker in this context already in 1963 in its pejorative meaning for someone messing with the phone system. The overlap quickly started to break when people joined in the activity who did it in a less responsible way. This was the case after the publication of an article exposing the activities of Draper and Engressia.

According to Raymond, hackers from the programmer subculture usually work openly and use their real name, while computer security hackers prefer secretive groups and identity-concealing aliases. Also, their activities in practice are largely distinct. The former focus on creating new and improving existing infrastructure (especially the software environment they work with), while the latter primarily and strongly emphasize the general act of circumvention of security measures, with the effective use of the knowledge (which can be to report and help fixing the security bugs, or exploitation reasons) being only rather secondary. The most visible difference in these views was in the design of the MIT hackers' Incompatible Timesharing System, which deliberately did not have any security measures.

There are some subtle overlaps, however, since basic knowledge about computer security is also common within the programmer subculture of hackers. For example, Ken Thompson noted during his 1983 Turing Award lecture that it is possible to add code to the UNIX "login" command that would accept either the intended encrypted password or a particular known password, allowing a backdoor into the system with the latter password. He named his invention the "Trojan horse". Furthermore, Thompson argued, the C compiler itself could be modified to automatically generate the rogue code, to make detecting the modification even harder. Because the compiler is itself a program generated from a compiler, the Trojan horse could also be automatically installed in a new compiler program, without any detectable modification to the source of the new compiler. However, Thompson disassociated himself strictly from the computer security hackers: "I would like to criticize the press in its handling of the 'hackers,' the 414 gang, the Dalton gang, etc. The acts performed by these kids are vandalism at best and probably trespass and theft at worst. ... I have watched kids testifying before Congress. It is clear that they are completely unaware of the seriousness of their acts."

The programmer subculture of hackers sees secondary circumvention of security mechanisms as legitimate if it is done to get practical barriers out of the way for doing actual work. In special forms, that can even be an expression of playful cleverness. However, the systematic and primary engagement in such activities is not one of the actual interests of the programmer subculture of hackers and it does not have significance in its actual activities, either. A further difference is that, historically, members of the programmer subculture of hackers were working at academic institutions and used the computing environment there. In contrast, the prototypical computer security hacker had access exclusively to a home computer and a modem. However, since the mid-1990s, with home computers that could run Unix-like operating systems and with inexpensive internet home access being available for the first time, many people from outside of the academic world started to take part in the programmer subculture of hacking.

Since the mid-1980s, there are some overlaps in ideas and members with the computer security hacking community. The most prominent case is Robert T. Morris, who was a user of MIT-AI, yet wrote the Morris worm. The Jargon File hence calls him "a true hacker who blundered". Nevertheless, members of the programmer subculture have a tendency to look down on and disassociate from these overlaps. They commonly refer disparagingly to people in the computer security subculture as crackers and refuse to accept any definition of hacker that encompasses such activities. The computer security hacking subculture, on the other hand, tends not to distinguish between the two subcultures as harshly, acknowledging that they have much in common including many members, political and social goals, and a love of learning about technology. They restrict the use of the term cracker to their categories of script kiddies and black hat hackers instead.

The front page of Phrack, a long-running online magazine for hackers

All three subcultures have relations to hardware modifications. In the early days of network hacking, phreaks were building blue boxes and various variants. The programmer subculture of hackers has stories about several hardware hacks in its folklore, such as a mysterious "magic" switch attached to a PDP-10 computer in MIT's AI lab that, when switched off, crashed the computer. The early hobbyist hackers built their home computers themselves from construction kits. However, all these activities have died out during the 1980s when the phone network switched to digitally controlled switchboards, causing network hacking to shift to dialing remote computers with modems when pre-assembled inexpensive home computers were available and when academic institutions started to give individual mass-produced workstation computers to scientists instead of using a central timesharing system. The only kind of widespread hardware modification nowadays is case modding.

An encounter of the programmer and the computer security hacker subculture occurred at the end of the 1980s, when a group of computer security hackers, sympathizing with the Chaos Computer Club (which disclaimed any knowledge in these activities), broke into computers of American military organizations and academic institutions. They sold data from these machines to the Soviet secret service, one of them in order to fund his drug addiction. The case was solved when Clifford Stoll, a scientist working as a system administrator, found ways to log the attacks and to trace them back (with the help of many others). 23, a German film adaption with fictional elements, shows the events from the attackers' perspective. Stoll described the case in his book The Cuckoo's Egg and in the TV documentary The KGB, the Computer, and Me from the other perspective. According to Eric S. Raymond, it "nicely illustrates the difference between 'hacker' and 'cracker'. Stoll's portrait of himself, his lady Martha, and his friends at Berkeley and on the Internet paints a marvelously vivid picture of how hackers and the people around them like to live and how they think."

Representation in media

The mainstream media's current usage of the term may be traced back to the early 1980s. When the term, previously used only among computer enthusiasts, was introduced to wider society by the mainstream media in 1983, even those in the computer community referred to computer intrusion as hacking, although not as the exclusive definition of the word. In reaction to the increasing media use of the term exclusively with the criminal connotation, the computer community began to differentiate their terminology. Alternative terms such as cracker were coined in an effort to maintain the distinction between hackers within the legitimate programmer community and those performing computer break-ins. Further terms such as black hat, white hat and gray hat developed when laws against breaking into computers came into effect, to distinguish criminal activities from those activities which were legal.

Network news' use of the term consistently pertains primarily to criminal activities, despite attempts by the technical community to preserve and distinguish the original meaning. Today, the mainstream media and general public continue to describe computer criminals, with all levels of technical sophistication, as "hackers" and do not generally make use of the word in any of its non-criminal connotations. Members of the media sometimes seem unaware of the distinction, grouping legitimate "hackers" such as Linus Torvalds and Steve Wozniak along with criminal "crackers".

As a result, the definition is still the subject of heated controversy. The wider dominance of the pejorative connotation is resented by many who object to the term being taken from their cultural jargon and used negatively, including those who have historically preferred to self-identify as hackers. Many advocate using the more recent and nuanced alternate terms when describing criminals and others who negatively take advantage of security flaws in software and hardware. Others prefer to follow common popular usage, arguing that the positive form is confusing and unlikely to become widespread in the general public. A minority still use the term in both senses despite the controversy, leaving context to clarify (or leave ambiguous) which meaning is intended.

However, because the positive definition of hacker was widely used as the predominant form for many years before the negative definition was popularized, "hacker" can therefore be seen as a shibboleth, identifying those who use the technically oriented sense (as opposed to the exclusively intrusion-oriented sense) as members of the computing community. On the other hand, due to the variety of industries software designers may find themselves in, many prefer not to be referred to as hackers because the word holds a negative denotation in many of those industries.

A possible middle ground position has been suggested, based on the observation that "hacking" describes a collection of skills and tools which are used by hackers of both descriptions for differing reasons. The analogy is made to locksmithing, specifically picking locks, which is a skill which can be used for good or evil. The primary weakness of this analogy is the inclusion of script kiddies in the popular usage of "hacker", despite their lack of an underlying skill and knowledge base.

See also

  • Script kiddie, an unskilled computer security attacker
  • Hacktivism, conducting cyber attacks on a business or organisation in order to bring social change

References

  1. Ghappour, Ahmed (2017-01-01). "Tallinn, Hacking, and Customary International Law". AJIL Unbound. 111: 224–228. doi:10.1017/aju.2017.59. ISSN 2398-7723. S2CID 158071009. Archived from the original on 2021-04-20. Retrieved 2020-09-06.
  2. Ghappour, Ahmed (2017-04-01). "Searching Places Unknown: Law Enforcement Jurisdiction on the Dark Web". Stanford Law Review. 69 (4): 1075. Archived from the original on 2021-04-20. Retrieved 2020-09-06.
  3. Hackers: Heroes of the Computer Revolution. 1984.
  4. G. Malkin, ed. (August 1996). Internet Users' Glossary. Network Working Group. doi:10.17487/RFC1983. FYI 18. RFC 1983. Informational. Obsoletes RFC 1392.
  5. Skillings, Jon (27 May 2020). "In '95, these people defined tech: Gates, Bezos, Mitnick and more". CNET. Archived from the original on 28 May 2020. Retrieved 28 May 2020. The term "hacker" started out with a benign definition: It described computer programmers who were especially adept at solving technical problems. By the mid-1990s, however, it was widely used to refer to those who turned their skills toward breaking into computers, whether for mild mischief or criminal gain. Which brings us to Kevin Mitnick.
  6. Samuel Chng; Han Yu Lu; Ayush Kumar; David Yau (Mar 2022). "Hacker types, motivations and strategies: A comprehensive framework". Computers in Human Behavior Reports. 5. doi:10.1016/j.chbr.2022.100167. ISSN 2451-9588.
  7. Yagoda, Ben. "A Short History of "Hack"". The New Yorker. Archived from the original on November 10, 2015. Retrieved November 3, 2015.
  8. G. Malkin; T. LaQuey Parker, eds. (January 1993). Internet Users' Glossary. Network Working Group. doi:10.17487/RFC1392. FYI 18. RFC 1392. Informational. Obsoleted by RFC 1983
  9. Alan Kay quoted in Stewart Brand, "S P A C E W A R: Fanatic Life and Symbolic Death Among the Computer Bums:" In Rolling Stone (1972)
  10. ^ Fred Shapiro: Antedating of "Hacker" Archived 2007-10-25 at the Wayback Machine. American Dialect Society Mailing List (13. June 2003)
  11. "The Origin of "Hacker"". April 1, 2008. Archived from the original on March 4, 2021. Retrieved March 1, 2021.
  12. * "What is a Civic Hacker?". Digital.gov. 2013-05-15. Archived from the original on 2023-11-03. Retrieved 2023-11-03.
  13. * Abegail (2016-06-04). "Join Us for National Day of Civic Hacking". California Health and Human Services. Retrieved 2023-11-03.
  14. * Gallagher, Sean (2015-02-25). "Bus pass: Civic hackers open transit data MTA said would cost too much to share". Ars Technica. Archived from the original on 2023-11-03. Retrieved 2023-11-03.
  15. * Lattanzio, Vince (2014-01-20). "Frustrated Over Late SEPTA Trains, Software Developer Creates App Proposing Better Schedules". Archived from the original on 2023-11-20. Retrieved 2023-11-20.
  16. "What are crackers and hackers? | Security News". www.pctools.com. Archived from the original on May 15, 2011. Retrieved 2016-09-10.
  17. London, Jay (6 April 2015). "Happy 60th Birthday to the Word "Hack"". Archived from the original on 7 May 2016. Retrieved 16 December 2016.
  18. Raymond, Eric (25 August 2000). "The Early Hackers". A Brief History of Hackerdom. Thyrsus Enterprises. Archived from the original on 10 October 2008. Retrieved 6 December 2008.
  19. Levy, part 2
  20. Levy, part 3
  21. Lloyd, Gene. "Developing Algorithms to Identify Spoofed Internet Traffic". Colorado Technical University, 2014
  22. phreaking. The Jargon Lexicon. Archived from the original on 2008-09-21. Retrieved 2008-10-18.
  23. ^ cracker. The Jargon Lexicon. Archived from the original on 2008-09-15. Retrieved 2008-10-18.
  24. Thompson, Ken (August 1984). "Reflections on Trusting Trust" (PDF). Communications of the ACM. 27 (8): 761. doi:10.1145/358198.358210. S2CID 34854438. Archived (PDF) from the original on 2007-09-24. Retrieved 2007-08-24.
  25. Richard Stallman (2002). "The Hacker Community and Ethics: An Interview with Richard M. Stallman". GNU Project. Archived from the original on 2021-03-07. Retrieved 2008-10-18.
  26. Part III. Appendices. The Jargon Lexicon. Archived from the original on 2008-09-13. Retrieved 2008-10-18.
  27. A Story About 'Magic'. The Jargon Lexicon. Archived from the original on 2008-09-13. Retrieved 2008-10-18.
  28. Part III. Appendices. The Jargon Lexicon. Archived from the original on 2008-09-13. Retrieved 2008-10-18.
  29. Deffree, Suzanne (2019-09-05). "EDN - 'Hacker' is used by mainstream media, September 5, 1983". EDN. Archived from the original on 2020-04-29. Retrieved 2020-09-07.
  30. DuBois, Shelley. "A who's who of hackers". Reporter. Fortune Magazine. Archived from the original on June 19, 2011. Retrieved 19 June 2011.
  31. "TMRC site". Archived from the original on 2006-05-03.

Further reading

  • Baker, Bruce D. "Sin and the Hacker Ethic: The Tragedy of Techno-Utopian Ideology in Cyberspace Business Cultures." Journal of Religion and Business Ethics 4.2 (2020): 1+ online Archived 2023-01-16 at the Wayback Machine.
  • Hasse, Michael. Die Hacker: Strukturanalyse einer jugendlichen Subkultur Archived 2017-09-30 at the Wayback Machine (1994)
  • Himanen, Pekka. The hacker ethic (Random House, 2010).
  • Himanen, Pekka. "19. The hacker ethic as the culture of the information age." The Network Society (2004): 420+ online.
  • Holt, Thomas J. "Computer hacking and the hacker subculture." in The palgrave handbook of international cybercrime and cyberdeviance (2020): 725–742.

Computer security

Free software/open source

External links

  • Hacking at Wikibooks
  • The dictionary definition of Hacker at Wiktionary
  • Media related to Hackers at Wikimedia Commons
Categories: