Anonymous ended in 2003.
Anonymous (group) . Beginning with 2008 's Project Chanology -- a series of protests , pranks , and hacks targeting the Church of Scientology -- the Anonymous collective became increasingly associated with collaborative hacktivism on a number of issues internationally . 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 .