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VISA and MasterCard warn of massive security breach

Up to 10 million credit cards may have exposed earlier this year: 

VISA and MasterCard warn of massive security breach (up to 10 Million credit cards) http://www.marketwatch.com/story/mastercard-visa-warn-of-security-breach-report-2012-03-30
http://krebsonsecurity.com/2012/03/mastercard-visa-warn-of-processor-breach/

QUOTE:  VISA and MasterCard are alerting banks across the country about a recent major breach at a U.S.-based credit card processor. Sources in the financial sector are calling the breach “massive,” and say it may involve more than 10 million compromised card numbers.  In separate non-public alerts sent late last week, VISA and MasterCard began warning banks about specific cards that may have been compromised. The card associations stated that the breached credit card processor was compromised between Jan. 21, 2012 and Feb. 25, 2012.

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