Anonymous is a loosely associated international group of activists and hacktivists known for their online protests and cyber attacks. They often advocate for freedom of speech, internet privacy, and government transparency. The group is recognized for its distinctive use of the Guy Fawkes mask, symbolizing rebellion against oppression. Founded in the mid-2000s, Anonymous operates without a centralized leadership, making it difficult to define its membership. The group has been involved in various high-profile campaigns, including support for WikiLeaks and protests against organizations like the Church of Scientology. Their activities have sparked debates about digital rights and ethical hacking.