Experts have identified two major hacker attacks: APT28 and APT29 (Advanced Persistent Threats), Voice of America reports.
APT29 phishing attack was aimed at the more than one thousand U.S. officials.
With the help of malicious links, hackers managed to gain access to the network of the Democratic Party in the summer of 2015.
The APT28 attack used the similar methods of hacking government portals in spring of 2016.
Thus, the hackers sent the associated with the Democratic Party persons fake emails about the need to change the mailbox password and then received a mailbox login and password to access it.
The authors of the FBI report note that most likely the hackers are linked to Russia's Foreign Intelligence Service.
The experts also believe that the hackers’ cyber attacks have continued after the presidential election. In particular, one of the attacks was registered a few days after November 8.
As QHA reported earlier, Russia has responded today to the introduction of new sanctions by the U.S. due to the Russia’s cyber attacks and the expulsion of 35 Russian diplomats.