U.S. Secret Service

Michelle Obama passport scan appears online in apparent hack

The White House said Thursday it was looking into a cyber breach after what appeared to be a scan of first lady Michelle Obama's passport was posted online.

The fresh disclosures, which included emails to and from White House staffers, raised further concerns about the security of sensitive systems following a string of breaches affecting government agencies, private companies and the Democratic National Committee. Though officials declined to say whether the disclosures were authentic, there were no immediate reasons to suspect they were not.

Attorney General Loretta Lynch said it was "something that we are looking into." The U.S. Secret Service, responsible for...