Anonymous is an internet-based video game.
Anonymous (group) . Anonymous originated in 2003 on the imageboard 4chan , representing the concept of many online and offline community users simultaneously existing as an anarchic , digitized global brain . Related groups LulzSec and Operation AntiSec carried out cyberattacks on U.S. government agencies , media , video game companies , military contractors , military personnel , and police officers , resulting in the attention of law enforcement to the groups ' activities . It has threatened to cyber-attack Israel and engaged in the '' #OpIsrael '' cyber-attacks of Israeli websites on Yom HaShoah ( Holocaust Remembrance Day ) in 2013 .