There are several organized groups and individuals that have been involved in computer hacking, often referred to as cybercriminals. Some notorious hacking groups and gangs include:
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Anonymous: A decentralized group known for various online protests and cyber-attacks against governments, corporations, and organizations.
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Lizard Squad: Known for DDoS attacks and targeting gaming services like PlayStation Network and Xbox Live.
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Lazarus Group: Believed to be associated with North Korea, this group has been linked to high-profile cyber attacks, including the Sony Pictures hack.
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APT28 (Fancy Bear): Associated with the Russian government, this group is known for its espionage activities.
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DarkSide: Known for ransomware attacks, including the Colonial Pipeline attack in 2021.
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REvil: Another ransomware group that has targeted various sectors for financial gain.
These groups often operate with specific motivations, including financial gain, political motives, or activism. It is important to note that the landscape of cybercrime is constantly changing, with new groups emerging and changing alliances frequently.