How one man tracked down Anonymous and paid a heavy price

How one man tracked down Anonymous and paid a heavy price: "Aaron Barr believed he had penetrated Anonymous. The loose hacker collective had been responsible for everything from anti-Scientology protests to pro-Wikileaks attacks on MasterCard and Visa, and the FBI was now after them. But matching their online identities to real-world names and locations proved daunting. Barr found a way to crack the code."