Prosecutors Seek Leniency for Cooperative Hacker

A prominent hacker set to be sentenced in federal court for breaking into numerous computer systems worldwide has provided a trove of information to the authorities, allowing them to disrupt at least 300 cyberattacks on targets that included the United States military, Congress, the federal courts, NASA and private companies, according to a newly filed government court document. The hacker, Hector Xavier Monsegur, also helped the authorities dismantle a particularly aggressive cell of the hacking collective Anonymous, leading to the arrest of eight of its members in Europe and the United States, including Jeremy Hammond, who the Federal Bureau of Investigation said was its top “cybercriminal target,” the document said.