The intrusion was carried out through computers around the world.
United States suspects that Russian hackers are the authors of cyberattacks suffered by the Department of State, through which would have gotten access to sensitive White House computer system elements, according to U.S. officials who were informed of the investigation revealed to CNN.
According to the sources consulted, U.S. investigations have led to IP addresses located in Russia, so it is suspected behind the cyberattack would be hackers of that country.
In the framework of this investigation, the security agencies would have discovered that hackers used the State Department for access to the network of the White House and steal all kinds of material.
The White House already acknowledged at the time that he had suffered a cyber attack that had lost non-classified material. However these sources say that yes will have sensitive information, such as the agenda in real time from President Barack Obama.
Even if that information is not classified, it is highly sensitive and valuable for foreign intelligence agencies, said U.S. officials.
The White House said last October that they noticed suspicious activity in an unclassified network serving Executive Office of Barack Obama. The system has been switched off periodically to make safety improvements.
The State Department and the White House attacks is one of the reasons why James Clapper, director of national intelligence, said during a Senate hearing in February that “the Russian cyber threat is more severe than previously estimated”.