 Although considered the mastermind of the scheme (operating on the site under the screen name of "CumbaJohnny"), he was not indicted.According to the indictment, there were 4,000 people who registered with the Shadowcrew.com website.Once registered, they could buy stolen account numbers or counterfeit documents at auction, or read “Tutorials and How-To’s” describing the use of cryptography in magnetic strips on credit cards, debit cards and ATM cards so that the numbers could be used.