A superb, insider tour of the dark Internet that lies below "the whitewashed, commercialized" world of the Web. Kevin Poulsen is one of the very few people who understands the territory: the scammers, the scammers of the scammers, and the law enforcement officers trying to catch them. KINGPIN describes a parallel business world, including "the underground's first hostile takeover," where characters who call themselves names like DarkCyd and Matrix and Ghost23 battle for control of digital scams. It is a fascinating, scary ride. - Review