Government background-checking firm USIS says it was targeted by a state-sponsored attack. The FBI is trying to figure out how many government employees were affected. The Department of Homeland Security has suspended all work with USIS while the FBI investigates. This is the second time since March that attackers have gone after employee information at the OPM. The OPM stores detailed data on up to 5 million government employees and contractors, some of whom hold sensitive security clearances. The breach shows how vulnerability can extend past an organizations four walls.”]