The company also found that 51 percent of all known servers used by attackers to buy or sell stolen personal information, such as credit card or bank account numbers, are located in the U.S.
Why the U.S., which has strict laws governing crimes of that nature? While it may be easier to get away with those crimes in emerging countries, the U.S. may be an ample place to launch these attacks from due to the large number of available servers. Co-lo hosts are everywhere, and prices are (relatively) cheap. It still puts things into perspective, though, when most effort seems to be going in to taking down phishing rings in other parts of the world.