The 18 most frightening data breaches

Heartland (2008)

Credit and debit card processing firm Heartland Payment Systems became one of the largest data breach victims in U.S. history when hackers compromised more than 130 million accounts in 2008.

The criminal ring involved in the Heartland data theft was also found to be responsible for the 2005 hack of TJX Companies involving 94 million records.

Image: David Shopper/Corbis

By Fox Van Allen

Fox Van Allen is a Los Angeles-based writer for CBS Interactive covering technology, tech lifestyle and gaming topics for GameSpot, CNET, ZDNet and TechRepublic. He has previously worked as a news and feature writer for a number of other sites, inclu...