As head of the National Infrastructure Protection Center`s office in Pittsburgh, FBI supervisory agent Dan Larkin mans a sentinel post on the front lines of the war against cybercrime. Rather than M-16s, his soldiers tote powerful computers, which they use to unmask hackers who break into networks and steal valuable information. They also try to intercept so-called script kiddies, who launch damaging denial-of-service attacks that flood Web servers with bogus queries and freeze company online operations. Full Story