Hector Xavier Monsegur
|Hector Xavier Monsegur|
|Born||October 13, 1983|
|Known for||Founder of LulzSec|
Hector Xavier Monsegur (b. 1983) known also by the online pseudonym Sabu, pronounced (Sə'buː, Sæ'buː)  is an American computer hacker and co-founder of the hacking group LulzSec. He later turned informant for the FBI, working with the agency for over ten months to aid them in identifying other hackers from Lulzsec and related groups. LulzSec intervened in the affairs of organizations such as News Corporation, Stratfor, British and American law enforcement bodies and Irish political party Fine Gael.
Sabu featured prominently in the group's published IRC chats, and claimed to support the "Free Topiary" campaign. The Economist referred to Sabu as one of LulzSec's six core members and their "most expert" hacker.
Sabu was identified by Backtrace Security as Hector Montsegur [sic] on 11 March 2011 in a PDF publication named "Namshub." 
Arrest and activity as an informant for the FBI
On March 6, 2012, Sabu was revealed to be Hector Xavier Monsegur, a 28-year old, unemployed foster parent of two girls who were the children of Sabu's incarcerated aunt. Sabu attended but did not graduate from Washington Irving High School. He had been residing in his late grandmother's apartment in the Riis Houses in New York City.
Federal agents arrested Monsegur on June 7, 2011. The following day, Monsegur agreed to become an informant for the FBI and to continue his "Sabu" persona. "Since literally the day he was arrested, the defendant has been cooperating with the government proactively," sometimes staying up all night engaging in conversations with co-conspirators to help the government build cases against them, Assistant U.S. Attorney James Pastore said at a secret bail hearing on Aug. 5, 2011. A few days after that bail hearing, Monsegur entered a guilty plea to 12 criminal charges, including multiple counts of conspiracy to engage in computer hacking, computer hacking in furtherance of fraud, conspiracy to commit access device fraud, conspiracy to commit bank fraud and aggravated identity theft. He faces up to 124 years in prison.
As an informant, Monsegur provided the FBI with details enabling the arrest of five other hackers associated with the groups Anonymous, Lulzsec and Antisec. The FBI provided its own servers for the hacking to take place. Information Monsegur provided also resulted in the arrest of two UK hackers: James Jeffery and Ryan Cleary.
Monsegur maintained his pretense until 6 March 2012, even tweeting his "opposition" to the federal government until the very last. The final day's tweets included, "The feds at this moment are scouring our lives without warrants. Without judges approval. This needs to change. Asap" and "The federal government is run by a bunch of fucking cowards. Don't give in to these people. Fight back. Stay strong". On 6 March 2012, the FBI announced the arrests of five male suspects: two from Britain, two from Ireland and one from the U.S.
Sabu has not been explicitly linked to the group Anonymous. The extent of crossover between the members of such hacktivist groups, however, is uncertain. Anonymous reacted to Sabu's unmasking and betrayal of LulzSec on Twitter, "#Anonymous is a hydra, cut off one head and we grow two back".
Steve Fishman of New York said "On the Internet, Monsegur was now a reviled figure. At Jacob Riis, it was a different story. Those who knew him growing up were shocked—he was always “respectful,” they said. But also, they were a little proud. In their eyes, he was a kid from the projects who’d achieved a certain success. He’d gotten out, finally."
- Kleinfield, N. R.; Sengupta, Somini (8 March 2012). "Hacker, Informant and Party Boy of the Projects". The New York Times.
- "LulzSec Leader Betrays All of Anonymous".
- Olson, Parmy (2012). We Are Anonymous: Inside the Hacker World of LulzSec, Anonymous, and the Global Cyber Insurgency. Little, Brown. p. 248. ISBN 978-0-316-21354-7.
- 'Lulzsec hackers' arrested in international swoop - BBC News, 6 March 2012
- "LulzSec leader Sabu was working for us, says FBI".
- "LulzSec IRC leak: the full record".
- "Inside Anonymous’ Secret War Room".
- "Cybercrime: Black hats, grey hairs".
- http://threatpost.com/en_us/blogs/chats-car-crushes-and-cut-n-paste-sowed-seeds-lulzsecs-demise-030712 "Chats, Car Crushes and Cut 'N Paste Sowed Seeds Of LulzSec's Demise"
- "Who Is Sabu? (Updated)".
- Fishman, Steve. "“Hello, I Am Sabu ..." New York. June, 11, 2012. p. 3. Retrieved on April 10, 2013.
- Sengupta, Somini (6 March 2012). "Arrests Sow Mistrust Inside a Clan of Hackers". The New York Times.
- Bray, Chad. ""FBI's 'Sabu' Hacker Was a Model Informant." The Wall Street Journal. March 9, 2012.
- Winter, Jara. "EXCLUSIVE: Inside LulzSec, a mastermind turns on his minions." Fox News. March 6, 2012.
- Ball, James. "LulzSec court papers reveal extensive FBI co-operation with hackers." The Guardian. Tuesday March 6, 2012.
- "Former Lulzsec Headman Turns Informant To Help Bust Bad Guys ". InfoBoom.
- Thomson, Iain. "LulzSec sneak Sabu buys six more months of freedom." The Register. August 23, 2012.
- Sengupta, Somini (March 12, 2012). "A Hacker Charms and Disappoints". The New York Times.
- "Dublin arrest in 'Anonymous' probe". Irish Government News Service.
- "Anonymous Reacts to Sabu’s Betrayal of LulzSec".
- Fishman, Steve. "“Hello, I Am Sabu ..." New York. June, 11, 2012. p. 6. Retrieved on April 10, 2013.