The security breach at Princeton, N.J., payment processor Heartland Payment Systems could be the largest ever, according to The Washington Post.
Robert Baldwin Jr., the company's president and chief financial officer, told USA Today that hackers had access to Heartland's system for "longer than weeks" in late 2008. The company processes about 100 million transactions a month at more than 250,000 locations across the country, according to ChannelWeb. The number of transactions intercepted has not been determined.
The TJX breach, in which 94 million customer records were intercepted in 2007, probably holds the record.