 Anonymous (hacker group)

Anonymous is a decentralized international hacktivist collective known for its various cyber activities, ranging from protests to website defacements and data breaches. The group originated in the mid-2000s on the online imageboard 4chan, where users would post anonymously and engage in a culture of pranks and commentary. Key characteristics of Anonymous include: 1. **Decentralization**: There is no formal leadership structure, and individuals can join or leave the movement at will.