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OurMine, a hacker group that compromised celebrities and YouTuber's Twitter accounts for "security" reasons.

414s, named after area code; gained notoriety in the early 1980s as a group of friends and computer hackers who broke into dozens of high-profile computer systems, including ones at Los Alamos National LaboratorySloan-Kettering Cancer Center, and Security Pacific Bank.[1]

AnonCoders is a group of hackers originating in 2015. Using defacements, denial of service attacks, database hijacking, database leaks, admin panel takeovers, social media accounts (Facebook, Twitter, Emails) and other methods, It mainly targets political groups and anti-Islam websites including news organizations, institutions and other government, semi-government, military and educational websites around the world. AnonCoders first attack was leveled against several major Israeli websites. In February, it attacked numerous French websites in opposition to cartoons of the Islamic prophet Muhammad published in Charlie Hebdo Magazine. The group has vandalized sites in Israel, Europe, and the United States

Anonymous, originating in 2003, Anonymous was created as a group for people who fought for the rights for privacy. The group didn't accomplish that much, apart from giving a group of Black Hat hackers the idea to recreate anonymous as an idea free for all who wanted a private life. Therefore, anonymous is not considered a group, but an idea

Chaos Computer Club, is based in Germany and other German-speaking countries. Famous among older hackers

Cicada 3301, a group of hackers and cryptographers that recruited from the public on three occasions between 2012 and 2014 by way of complex puzzles and hacking scavenger hunts.[2][3][4][5]

Croatian Revolution Hackers, a now defunct group of Croatian hackers credited with one of the largest attacks to have occurred in the Balkans.

Cult of the Dead Cow, also known as cDc or cDc Communications, is a computer hacker and DIY media organization founded in 1984 in Lubbock, Texas.

CyberVor is the moniker given to a group of Russian hackers responsible for perpetrating a major 2014 theft of internet credentials

DCLeaks, claims to be a group of "American hacktivists who respect and appreciate freedom of speech, human rights and government of the people."

Decocidio#Ө is an anonymous, autonomous collective of hacktivists which is part of Earth First!, a radical environmental protest organisation, and adheres to Climate Justice Action

DERP A hacker group that attacked several game sites in late 2013.

Digital DawgPound (DDP)

Equation Group, suspected to be the offensive operations wing of the U.S. National Security Agency.

Ghost Squad Hackers, or by the abbreviation "GSH" is a poliltically motivated hacktivist team led by the administrative de facto leader known as "s1ege". The groups prime intent and focus is embedded on anti-governmental/organization cyber protests within current involvements of media speculation and real life happenings in 2016 to present.

Global kOS was a grey hat (leaning black hat) computer hacker group active from 1996 through 2000.

globalHell was a group of hackers, composed of about 60 individuals. The group disbanded in 1999, when 12 members were prosecuted for computer intrusion and 30 for lesser offences.

Goatse Security (GoatSec) is a loose-knit, nine-person grey hat hacker group that specializes in uncovering security flaws.

Hackweiser is an underground hacking group and hacking magazine founded in 1999.

Honker Union is a group known for hacktivism, mainly present in Mainland China, whose members launched a series of attacks on websites in the United States, mostly government-related sites.

L0pht, was a hacker collective active between 1992 and 2000 and located in the Boston, Massachusetts area.

Level Seven was a hacking group during the mid to late 1990s. Eventually dispersing in early 2000 when their nominal leader "vent" was raided by the FBI on February 25, 2000.

Lizard Squad

LulzSec, a group of hackers originating and disbanding in 2011 that claimed to hack "for the lulz". Currently broken up.

Legion of Doom; LOD was a hacker group active in the early 80s and mid-90s. Had noted rivalry with Masters of Deception (MOD).

Masters of Deception, MOD's initial membership grew from meetings on Loop-Around Test Lines in the early- to mid-1980s. Had noted rivalry with Legion of Doom (LOD).

Mazafaka, financially motivated group and crime forum.

milw0rm is a group of "hacktivists" best known for penetrating the computers of the Bhabha Atomic Research Centre (BARC) in Mumbai.

NCPH is a Chinese hacker group based out of Zigong in Sichuan Province.

P.H.I.R.M. The PHIRM was an early hacking group which was founded in the early 1980s.

RedHack is a socialist hacker group based in Turkey, founded in 1997. They usually launch attacks against Turkish government's websites and leak secret documents of Turkish government.

Shadow Brokers (The) (TSB), originating in summer 2016. They published several leaks of some of the National Security Agency (NSA) hacking tools.

Syrian Electronic Army is a group that claims responsibility for defacing or otherwise compromising scores of websites that it contends spread news hostile to the Syrian government or fake news

TeaMp0isoN is a group of black-hat computer hackers established in mid-2009

TeslaTeam is a group of black-hat computer hackers from Serbia established 2010

TESO, was a hacker group originating in Austria that was active primarily from 1998 to 2004

The Unknowns is a group of white-hat hackers that exploited many high-profiled websites and became very active in 2012 when the group was founded and disbanded.

UGNazi A hacking group led by JoshTheGod, founded in 2011. They are best known for several attacks on US government sites,[6] leaking WHMC's database,[7] DDoS attacks, and exposing personal information of celebrities and other high-profile figures on exposed.su.

YIPL/TAP - Youth International Party Line or Technological Assistance Program, was an early phone phreak organization and publication created in the 1970s by activist Abbie Hoffman.

Xbox Underground An international group responsible for hacking game developers, including Microsoft





Anonymous (skupina)

Anonymous je anonymní a na sobě nezávislé nehierarchické hnutí, které se do povědomí internetových komunit začalo dostávat v roce 2003 na základě automaticky generované přezdívky přispěvatele na stránkách 4chan.org a jim podobných. V letech 2010 a 2011 začaly informace o Anonymous pronikat i do masmédií, což bylo zapříčiněno velkým zájmem, který vzbudila jejich činnost spojená s hacktivistickým hájením WikiLeaks (Operace odplata) či proti firmě Sony (Operace Sony). Podíleli se i na převratech v Tunisku a Egyptě na začátku roku 2011.

Legion of Doom

The Legion of Doom (LOD) was a hacker group active from the 1980s to the late 1990s and early 2000. During its heyday from around 1984-1991 Legion of Doom was widely considered to be the most capable hacking group in the world. To this day, LOD ranks as one of the greatest, and certainly most influential hacking groups in the history of technology. Their name appears to be a reference to the antagonists of Challenge of the Super Friends. LOD was founded by the hacker Lex Luthor, after a rift with his previous group the Knights of Shadow.

Lulz Security

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Masters of Deception

MOD's initial membership grew from meetings on Loop-Around Test Lines that led to legendary collaborations to hack RBOC phone switches and the various minicomputers and mainframes used to administer the telephone network. They successfully remained underground using alternative handles to hide even their true hacker identities.


Milw0rm is a group of "hacktivists" best known for penetrating the computers of the Bhabha Atomic Research Centre (BARC) in Mumbai, the primary nuclear research facility of India, on June 3, 1998. The group conducted hacks for political reasons, including the largest mass hack up to that time, inserting an anti-nuclear weapons agenda and peace message on its hacked websites. The group's logo featured the slogan "Putting the power back in the hands of the people."

P. H. I. R. M.

The PHIRM was an early hacking group which was founded in the early 1980s. First going by the name of "KILOBAUD",the firm was reorganized in 1985 to reflect a favorite television show of the time "Airwolf". By the mid-1980s The PHIRM was sysopping hundreds of boards. Some of the more notable boards included Thieves' Underground sysoped by Jack The Ripper, Angel's Nest sysoped by Archangel, World's Grave Elite sysoped by Sir Gamelord, and SATCOM IV. The PHIRM broke up in 1990, voluntarily, stating that after the Legion of Doom arrests that they had become too high-profile.


TESO was a hacker group, which originated in Austria. It was active from 1998 to 2004, and during its peak around 2000, it was responsible for a significant share of the exploits on the bugtraq mailing list.


w00w00 is a computer security think tank founded in 1996 and still active until the early 2000s.Although this group was not well known outside Information security circles, its participants have spawned more than a dozen IT companies. The two most famous examples are WhatsApp, the messaging service, and Napster, the pioneering file-sharing company.

Operation AntiSec

Operation Anti-Security, also referred to as Operation AntiSec or #AntiSec, is a series of hacking attacks performed by members of hacking group LulzSec, the group Anonymous, and others inspired by the announcement of the operation. LulzSec performed the earliest attacks of the operation, with the first against the Serious Organised Crime Agency on 20 June 2011.

Antisec Movement

The Anti Security Movement (also written as antisec and anti-sec) is a movement opposed to the computer security industry. Antisec is against full disclosure of information relating to but not limited to: software vulnerabilities, exploits, exploitation techniques, hacking tools, attacking public outlets and distribution points of that information. The general thought behind this is that the computer security industry uses full disclosure to profit and develop scare-tactics to convince people into buying their firewalls, anti-virus software and auditing services.


Securax (1998–2002) was considered as one of Belgium's strongest hacking movements in the past twenty years and was founded by Filip Maertens and co-founded by Davy Van De Moere as an online community in order to combine skills and experiences in the domain of vulnerability identification, zero-day exploit creation and penetration testing methods. The movement was known for its critical insights into the information security industry, bold press interviews and its near-daily newsletter (in Dutch).