George Mason University researchers Damon McCoy and Jackie Jones have found that the majority of Craigslist buyer scams originate from one of only 5 Nigerian gangs with substantial help from US-based accomplices. More than half of the scam emails were sent from Nigeria, and from just five groups of scammers. Texas showed up at the top of the list, with 63% of the states scammers identified acting as both the mailer of the bogus checks and the mover agent/muleule.”]