Team Obama Knows China Is Behind the OPM Hack. Why Won’t They Say So?

Intelligence agencies jealously guard their techniques for monitoring China’s armies of hackers and tracing attacks back to them, fearful that were they exposed, streams of valuable intelligence could dry up. Revealing technical details of how the U.S. has attributed the breach of OPM to Chinese actors could tip off hackers to the ways that American intelligence agencies track them, said Lewis, a director and senior fellow at the Center for Strategic and International Studies in Washington. Lewis added that in the OPM case, attributing the hack to China has been a less complicated matter than deciding when to point the finger.