Hacker turned FBI informant `Sabu` walks free

A convicted computer hacker Hector Xavier Monsegur, popularly known as Sabu, has walked free after he helped the US authorities foil hundreds of cyber attacks.

Hacker "Sabu" worked full nights online for FBI

One late-night visit by the FBI was all it took for the notorious hacker known as "Sabu" to switch sides and become a valued snitch.