Anonymous

Anonymous is a decentralized hacker collective known for its online activism and various cyberattacks. The group's members are often referred to as "hacktivists" and are known for wearing Guy Fawkes masks during protests and demonstrations. Anonymous was formed in 2003 and gained international attention in 2008 with a series of protests against the Church of Scientology. The group has since targeted various organizations and governments, often for perceived violations of free speech and privacy rights. Anonymous has been associated with many high-profile attacks, including the 2010 Operation Payback against MasterCard, Visa, and PayPal in response to their decision to cut off donations to WikiLeaks. While the group's actions have been controversial, they have also been credited with drawing attention to important issues and sparking public debate. The decentralized nature of Anonymous makes it difficult to identify individual members, which has contributed to the group's longevity and notoriety.