More fingerprint records of current and former workers were stolen in a security breach than previously thought, the OPM says.

Cyber attacks by hackers intent on altering electronic and financial data might increase, U.S. intelligence head warns.

The top executives of Google Inc., Yahoo! Inc. and Facebook Inc. wont attend President Barack Obamas cybersecurity summit on Friday, at a time when relations between the White House and Silicon Valley have frayed over privacy issues.