The State Department shut down its worldwide email late on Friday as part of a scheduled outage of some of its systems exposed on the Internet, the measure was necessary to improve the level of security for its unclassified computer network. Security experts believe that the cyber attacks are coordinated by a foreign government, which is intent in cyber espionage activities. Security community speculates that Russian or Chinese hackers may have been involved in the attacks, but the US Government has never publicly confirmed it. The incident was made public in October, but since then many other government entities were targeted by cyber attacks.”]
Source: https://securityaffairs.co/wordpress/30263/security/state-department-hacked.html