To most observers he seemed unpredictable, dangerous and so highly skilled that he could evade the long arm of the law. But in an astonishing revelation, last week it emerged that Sabu, the notorious figurehead of hacking group LulzSec, had for almost nine months been working secretly as an informant for the FBI.
What the Sabu revelation means for hackers
Everyone, no matter who they profess to be, is potentially an informant.