An interesting article over at Wired about one man who wanted to prove himself to the underground online world.
Settling into his chair and resting his fingers on his keyboard like a concert pianist, Butler began his attack. Most illegal online loot was fenced through four so-called carder sites-marketplaces for online criminals to buy and sell credit card numbers, Social Security numbers, and other purloined data. One by one, Butler took them down. (This story, like the rest of this article, has been reconstructed using court documents and conversations with friends and associates; Butler declined to be interviewed.)