Tripwire: Anonymous hacktivist Hector Xavier Monsegur, more commonly known by his handle Sabu, is thought to have directed multiple attacks against foreign targets while acting as an informant for the Federal Bureau of Investigation, according to reports based on redacted federal court testimony.
Monsegur, who was arrested in 2011 for his malicious hacking activities but not yet convicted, has been a confidential informant for the FBI for several years, and is believed to have provided intelligence on other Anonymous members in an effort to reduce the likelihood of a lengthy prison sentence.