Anonymous

Anonymous is a loosely associated international network of activist and hacktivist entities. A website nominally associated with the group describes it as "an Internet gathering" with "a very loose and decentralized command structure that operates on ideas rather than directives".[2] The group became known for a series of well-publicized publicity stunts and distributed denial-of-service (DDoS) attacks on government, religious, and corporate websites.[3] Anonymous originated in 2003 on the imageboard 4chan. https://en.wikipedia.org/wiki/Anonymous_(group)