LulzSec is an international hacking group that has claimed responsibility for infiltrating and shutting down the CIA website. It is an offshoot fo the international hacking group, Anonymous. Both became notorious in 2010 when they launched what they called the first "cyberwar" in retaliation for attempts to shut down the WikiLeaks website. The name LulzSec is a combination of "lulz", another way of writing "lols" or "laugh out loud", and security.
In April 2013 Australian Federal Police claimed to have arrested the self-proclaimed leader of LulzSec. Police said the unnamed Australian man, 24, used the online moniker "Aushok". His arrest came a week after an American member of LulzSec, Cody Kretsinger, was sentenced by a Los Angeles court to a year in prison.
Court documents in that case revealed that Anonymous leader “Sabu”, whose real name is Hector Xavier Monsegur, had provided the FBI with information on fellow hackers after pleading guilty to hacking offences.
The Australian hacker has been charged with two counts of unauthorised modification of data to cause impairment and one count of unauthorised access to a restricted data system after a government website was attacked earlier this month.