Lulz Security, commonly abbreviated as LulzSec, is a computer hacker group that claims responsibility for several high profile attacks, including the compromise of user accounts from Sony Pictures in 2011. The group also claimed responsibility for taking the CIA website offline.[1] The group has been described as a "cyber terrorism group" by the Arizona Department of Public Safety after their systems were compromised and information leaked.[2] Other security professionals have applauded LulzSec for drawing attention to insecure systems and the dangers of password reuse.[3] It has gained attention due to its high profile targets and the sarcastic messages it has posted in the aftermath of its attacks. At just after midnight (BST) on 26 June 2011, LulzSec released a "50 days of lulz" statement, which they claimed to be their final release, confirming that LulzSec consisted of six members, and that their website is to be taken down.[4] This breaking up of the group was unexpected.[5] The release included accounts and passwords from many different sources. Despite claims of retirement, the group committed another hack against newspapers owned by News Corporation on 18 July, defacing them with false reports regarding the death of Rupert Murdoch. The London Metropolitan Police has announced the arrests of two teenagers they allege are LulzSec members T-flow and Topiary. The group helped launch Operation AntiSec, a joint effort involving LulzSec, Anonymous, and other hackers.