The White House and the State Department have been attacked by Russian hackers, US officials claim.
A report by CNN on Tuesday blamed Russian hackers for the breach of security in recent months, saying they attempted to “penetrate sensitive parts of the White House computer system”.
The report cited officials “briefed on the investigation” as saying that the hackers gained access to “sensitive information such as real-time non-public details of the president's schedule”.
Last October, the White House reported suspicious activity in the network of the executive office of President Barack Obama.
“The FBI, Secret Service and US intelligence agencies are all involved in investigating the breach, which they consider among the most sophisticated attacks ever launched against US government systems,” the report said.
How it all began

The investigators claim the hacking of the White House has been carried out through an initial breach of the State Department.
According to one official, the State Department system has been "owned" by the hackers for months and it is yet not clear if the attack has ended.
The hackers initially took over a State Department email account, through which they sent a “phishing email” to begin intrusion into the White House, according to the US officials.
Back in February, Director of National Intelligence James Clapper told a Senate hearing that the "Russian cyberthreat is more severe than we have previously assessed".
NT/NT