It's no secret that the Chinese military represents a real threat to online security here in the U.S. Over the last several years, state-sponsored Chinese hackers have broken into hundreds of American targets--both inside the U.S. government and across the private sector. But when the Department of Justice announced criminal charges against five hackers working for China's military this morning, it came at an awkward time. After a year of revelations from ex-NSA contractor Edward Snowden, it's clearer than ever before that America's own government hackers have been running rampant through the world's networks.