Up to now, private-sector researchers have had scant success putting faces to the hacks. There have been faint clues left behind—aliases used in domain registrations, old online profiles, or posts on discussion boards that give the odd glimpse of hackers at work—but rarely an identity. Occasionally, though, hackers mess up. Recently, one hacker's mistakes led a reporter right to his door.
A great companion piece to the New York Times article published previously.