Heartland Payment Systems Announces Major Card Data Breach

Heartland Payment Systems has announced it has learned it was the victim of a security breach within its processing system in 2008. Heartland says it "believes the intrusion is contained." The company has created a website for "to provide information about this incident and advises cardholders to examine their monthly statements closely and report any suspicious activity to their card issuers."

Brian Krebs reports for the Washington Post that the breach "may have led to the compromise of more than 100 million credit and debit card transactions."

The data stolen includes the digital information encoded onto the magnetic stripe built into the backs of credit and debit cards. Armed with this data, thieves can fashion counterfeit credit cards by imprinting the same stolen information onto fabricated cards.