Security breach may hit 40 million credit cards

MasterCard has reported that more than 40 million creditcard accounts of all brands, including 13.9 million MasterCards, may have been exposed to fraud through a security breach at a third-party payment processing company. MasterCard said in a statement that its analysts and law enforcement officials identified a security hole at CardSystems Solutions, a company based in Tucson, Arizona,that processes more than $15 billion in Visa, MasterCard,American Express, Discover, online debit and electronic transfer transactions a year for small to midsize merchants and financial institutions.