US Officials: Second hack exposed military and intel data 

A gate leading to the Homeland Security Department headquarters in northwest Washington

Hackers linked to China appear to have gained access to the sensitive background information submitted by intelligence and military personnel for security clearances, several U.S. officials said Friday, describing a second cyberbreach of federal records that could dramatically compound the potential damage.
The forms authorities believed to have been accessed, require applicants to fill out deeply personal information about mental illnesses, drug and alcohol use, past arrests and bankruptcies. They also require the listing of contacts and relatives, potentially exposing any foreign relatives of U.S. intelligence employees to coercion. Both the applicant’s national identification number and that of his or her cohabitant is required.
The officials spoke on condition of anonymity because the security clearance material is classified.
In a statement, the White House said that on June 8, investigators concluded there was “a high degree of confidence that … systems containing information related to the background investigations of current, former and prospective federal government employees, and those for whom a federal background investigation was conducted, may have been exfiltrated.”
“This tells the Chinese the identities of almost everybody who has got a United States security clearance,” said Joel Brenner, a former top U.S. counterintelligence official. “That makes it very hard for any of those people to function as an intelligence officer. The database also tells the Chinese an enormous amount of information about almost everyone with a security clearance. That’s a gold mine. It helps you approach and recruit spies.”
The Office of Personnel Management, a central personnel database, which was the target of the hack, has not officially notified military or intelligence personnel whose security clearance data was breached, but news of the second hack was starting to circulate in both the Pentagon and the CIA.
The officials said they believe the hack into the security clearance database was separate from the breach of federal personnel data announced last week — a breach that is itself appearing far worse than first believed. It could not be learned whether the security database breach happened when an OPM contractor was hacked in 2013, an attack that was discovered last year. Members of Congress received classified briefings about that breach in September, but there was no mention of security clearance information being exposed.
The OPM had no immediate comment Friday. Ken Dilanian and Ted Bridis, Washington, AP