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On July, 13, 2018, the Department of Justice announced indictments against 12 GRU officers "for committing federal crimes that were intended to interfere with the 2016 U.S. presidential election."
Link to the indictments: https://www.justice.gov/file/1080281/download
and the press release: https://www.justice.gov/opa/pr/grand-jury-indicts-12-russian-intelligence-officers-hacking-offenses-related-2016-election
When most Americans think of Soviet/Russian intelligence activity in our country, they primarily think of the state security services, the KGB (Committee for State Security) and its main post-Soviet successor, the FSB (Federal Security Service). Some of the most famous and effective Soviet/Russian intelligence operations in the United States, however, have involved an organization few Americans have heard of, one dubbed "the neighbors" by their KGB/FSB rivals: the Glavnoye Razvedyvatelnoye Upravlenie (GRU), the Main Intelligence Directorate of the Armed Forces General Staff: Soviet/Russian military intelligence. From the recruitment of State Department official Alger Hiss in the 1930's, to the Cuban Missile Crisis, to the 2016 election-related hacking of the Democratic National Committee (DNC), the GRU has played an important yet overlooked role in many of Moscow's most influential intelligence activities in this country.
It has employed tools of the digital age in cyberspace. One of the most ambitious and effective hacking organizations, dubbed APT-28, or "Fancy Bear" is believed to be run by the GRU. According to US Government and private analysts, it was Fancy Bear that conducted the 2016 election-related hacks here in the US, directed at the DNC and other political targets.
On December 29, 2016, the Obama Administration sanctioned the GRU "for tampering, altering, or causing a misappropriation of information with the purpose of effect or interfering with the 2016 U.S. election process."
"Assessing Russian Activities and Intentions in Recent U.S. Elections." Office of the Director of National Intelligence. January 6, 2017.
CIA. Freedom of Information Act Electronic Reading Room.
Cold War International History Project: Venona Project and Vassiliev Notebooks Index and Concordance.
Fact Sheet: Actions in Response to Russian Malicious Cyber Activity and Harassment. White House Office of the Press Secretary. December 29, 2016
FBI FOIA Vault: Alger Hiss' FBI File.
Wilson Center Digital Archive: Vassiliev Notebooks.
Reference Service Department