Anons claimed to have attacked more than 80 government sites, many of which had nothing to do with protesters' complaints.
In September 2012, a top British spy agency reportedly launched cyberattacks against Anonymous and LulzSec.
Two other confidential informants, arrested weeks after Sabu, may have ratted on the hacker group.
Karen Lancaster McCutchin faces a year in prison for obstructing the execution of a search warrant issued against her son.
The first hackers ever successfully prosecuted in Ireland have finished a sentence diversion program.
Does the FBI still need him?