LulzSec hacker jailed for Sony Pictures attack Kretsinger's plea came a month after court documents revealed that Anonymous leader "Sabu," whose real name is Hector Xavier Monsegur, had pleaded guilty to hacking-related charges and provided the FBI with information on fellow hackers. Prosecutors have declined to say if Kretsinger was also cooperating with authorities in exchange for leniency. Anonymous and its offshoots, including LulzSec and AntiSec, focused initially on fighting attempts at Internet regulation and the blocking of free illegal downloads, but have since taken on other targets including Scientology and the global banking system. Anonymous, and LulzSec in particular, grabbed the spotlight in late 2010 when they launched what they called the "first cyber war" in retaliation for attempts to shut down the Wikileaks website. Last week a 26-year-old British man pleaded guilty in that country to carrying out cyber attacks on targets including Sony and Nintendo as part of LulzSec while using the online persona of a 16-year-old girl named Kayla.