Prosecutors: Hacker-Turned-Informant Helped Thwart 300 Cyberattacks[ Mon, 26 May 2014 21:06:16 GMT ]Federal prosecutors in New York say an admitted computer hacker helped the FBI thwart hundreds of cyberattacks on government and corporate computer systems.The prosecutors also credit Hector Xavier Monsegur with helping cripple the group of so-called hacktivists known as Anonymous.