Hackers linked to China’s government broke into one of the U.S. government’s most sensitive computer networks, breaching a system used by the White House Military Office for nuclear commands, according to defense and intelligence officials familiar with the incident.
One official said the cyber breach was one of Beijing’s most brazen cyber attacks against the United States and highlights a failure of the Obama administration to press China on its persistent cyber attacks.

[link to freebeacon.com]