MasterCard and Visa have disclosed non-public alerts warning of a possible risks arising the data exposure. Mastercard and MasterCard are alerting banks across US about the event and the related risks. The breach may involve more than 10 million compromised card numbers. Global Payments (GPN) discovered the breach in the beginning of March 2012, the card associations have dated the breach between Jan. 21, 2012 and Feb. 25, 2012. This is not the first time that a breach is observed in the payment world, last June Citibank breach exposed 360,000 accounts but only 3,400 accounts.”]