Kevin Poulsen is a convicted computer hacker who has transformed himself into a top security journalist. He is the author of "Kingpin," a book about CardersMarket operator Max Butler, and is the news editor at Wired.com.
Poulsen's specialty was hacking telephone networks. He once commandeered all the phone lines of a Los Angeles radio station to ensure he would be the winning caller in a Porsche giveaway. Poulsen served more than five years in prison.