1. Lizard Squad: This organized hacking group gained notoriety for launching distributed denial-of-service (DDoS) attacks on various gaming networks, including Xbox Live and PlayStation Network.
2. Anonymous: Known for their hacktivist activities, Anonymous is a loosely associated international group of hackers that targets governments, corporations, and organizations they perceive as oppressive or corrupt.
3. APT28 (Fancy Bear): This Russian state-sponsored hacking group has been linked to various cyber espionage campaigns, including the hacking of the Democratic National Committee (DNC) during the 2016 U.S. presidential election.
4. Carbanak: Carbanak is a sophisticated cybercrime group that primarily targets financial institutions. They have been involved in large-scale thefts, using advanced techniques like spear-phishing and malware to compromise banking systems.
5. Equation Group: Believed to be associated with the United States National Security Agency (NSA), Equation Group is known for their advanced cyber espionage capabilities. They have been involved in high-profile attacks targeting governments, organizations, and individuals worldwide.
6. Lazarus Group: This North Korean state-sponsored hacking group has been linked to various cyber attacks, including the 2014 Sony Pictures hack and the WannaCry ransomware attack in 2017.
7. DarkSide: DarkSide gained attention in 2021 for their involvement in the Colonial Pipeline ransomware attack, which disrupted fuel supplies on the U.S. East Coast. They are a ransomware-as-a-service (RaaS) group that collaborates with other cybercriminals to carry out attacks.
8. APT29 (Cozy Bear): Another Russian state-sponsored hacking group, APT29 has been involved in various cyber espionage campaigns, targeting governments, think tanks, and defense contractors.
9. The Syrian Electronic Army (SEA): This hacking group supports the Syrian government and has been involved in numerous cyber attacks, defacements, and social media account hijackings to spread propaganda and disrupt their perceived enemies.
10. APT32 (OceanLotus): A Vietnamese state-sponsored hacking group, APT32 has been involved in cyber espionage campaigns targeting Southeast Asian countries, particularly focusing on political organizations, media outlets, and multinational corporations.