The FBI is investigating how hackers infiltrated computers at the Federal Deposit Insurance Corp. for several years beginning in 2010 in a breach senior FDIC officials believe was sponsored by China's military, people with knowledge of the matter said.
The security breach, in which hackers gained access to dozens of computers including the workstation for former FDIC Chairwoman Sheila Bair, has also been the target of a probe by a congressional committee.
The FDIC is one of three federal agencies that regulate commercial banks in the United States. It oversees confidential plans for how big banks would handle bankruptcy and has access to records on millions of individual American deposits.