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Brian Krebs

Credit-card machine (file/credit: Behrouz Mehri/AFP/Getty Images)

Major Credit Card Security Breach May Affect Up To 10 Million MasterCard, Visa Customers

Some major credit card companies are warning their customers that their account information may have fallen into the wrong hands. As many as 10 million MasterCard and Visa customers may be victims of the latest big credit card security breach.

03/30/2012