After the Office of Personnel Management Chinese hacking, it seems that almost no government system is secure.

Now another example.

From NBC News:

U.S. officials tell NBC News that Russia launched a “sophisticated cyberattack” against the Pentagon’s Joint Staff unclassified email system, which has been shut down and taken offline for nearly two weeks. According to the officials, the “sophisticated cyber intrusion” occurred sometime around July 25 and affected some 4,000 military and civilian personnel who work for the Joint Chiefs of Staff.
Sources tell NBC News that it appears the cyberattack relied on some kind of automated system that rapidly gathered massive amounts of data and within a minute distributed all the information to thousands of accounts on the Internet. The officials also report the suspected Russian hackers coordinated the sophisticated cyberassault via encrypted accounts on social media.

The officials say its not clear whether the attack was sanctioned by the Russian government or conducted by individuals. But, given the scope of the attack, “It was clearly the work of a state actor,” the officials say.


The Daily Beast further reports:

The hacking of the Joint Chiefs of Staff email network on July 27 marked the “most sophisticated” cyberbreach in U.S. military history, Department of Defense officials concede. Various government officials are working to revamp parts of their network in response. In the meantime, officials have spent the last 10 days scrubbing the system and creating mock hacking scenarios before giving military personnel access to it again.