On Friday July 29, 2016 the Democratic Congressional Campaign Committee reported that its computer systems had been infiltrated.
[1] It is strongly believed by US intelligence sources that the infiltrator groups are Russian foreign intelligence groups that breached the Democratic National Committee's computer systems.
[3][4] CrowdStrike assisted with efforts to deal with the DCCC breach.
[4] There was significant concern that the Russian Government was attempting to influence the 2016 Presidential campaign.
[1][2][5] Russian cyber intrusions into United States government and private sector computer systems significantly increased after the U.S, imposed sanctions on Russia after its invasion of the Crimea in Ukraine.