Time for a Data Diet? Deciding What Customer Information to Keep -- and What to Toss

Heartland Payment Systems, a credit card processor, may have had up to 100 million records exposed to malicious hackers.

Payment processors CheckFree and RBS Worldpay, and employment site Monster.com have all reported data breaches in recent months, as have universities and government agencies.

Experts at Wharton say that personal data is increasingly a liability for companies, and suggest that part of the solution may be minimizing the customer information these companies keep.

http://knowledge.wharton.upenn.edu/article/2186.cfm