Target USA -- Anatomy of a Russian Attack Part 3: Troll farms, IMSI catchers

This is part three of our four-part Target USA series "Anatomy of a Russian Attack on the U.S." In this episode, former House Intelligence Committee Chairman Mike Rogers pulls back the curtain on Russia's troll farm operation, and intelligence expert Aaron Turner of Gravwell talks about how Russian operatives spied on mobile phones in Washington. As we've told you, the U.S. intelligence community has concluded that Russian President Vladimir Putin ordered operatives to interfere in the 2016 presidential election. This Target USA investigation, which began in November 2016, examines how the attack happened, when it started, who was involved and what will lay ahead. We conducted dozens of interviews -- in the U.S. and abroad -- with current and former U.S. intelligence officials, members of Congress, cyber security and intelligence experts, foreign government officials, Russian nationals, and American victims.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.