In the wake of hack, OPM shuts down the system for federal background checks for 4 to 6 weeks to fix security vulnerability Mike Levine / ABC News : ABC News 2015-06-30 Mike Levine ABC News, OPM, Mike Levine Related Coverage View article U.S. Office … View article Engadget View article Gizmodo View article Washington Post View article Nextgov View article Federal Times View article The Hill View article Washington Post View article Federal Computer Week