The largest data breach in history

Around 100 million credit and debit accounts have been leaked in the black market. A malware on a processing system in Heartland Payment Systems company is responsible of collecting this huge number of cards information, the exact details is not yet released including the exact number of leaked cards information and the exact parts of information that was leaked.
http://voices.washingtonpost.com/securityfix/2009/01/payment_processor_breach_may_b.html

Updated:

The source of breach is outside USA, can you make a country guess???
http://www.storefrontbacktalk.com/securityfraud/feds-identify-overseas-suspect-in-heartland-case/

If you have time to play the guessing game, take a look at:

http://www.nostradamical.com/predictions/technology/103-technology-prediction-is-the-heartland-payment-systems-security-breach-is-coming-from-the-middle-east-