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US Senator Richard Burr (R), Republican of North Carolina and Chairman of the Senate Select Committee on Intelligence, speaks alongside US Senator Mark Warner, (L), Democrat of Virginia and Committee Vice-Chairman, during a Committee hearing on Russian Intelligence Activities during US elections, on Capitol Hill in Washington, DC, March 30, 2017.
US Senator Richard Burr (R), Republican of North Carolina and Chairman of the Senate Select Committee on Intelligence, speaks alongside US Senator Mark Warner, (L), Democrat of Virginia and Committee Vice-Chairman, during a Committee hearing on Russian Intelligence Activities during US elections, on Capitol Hill in Washington, DC, March 30, 2017.

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    Expert: Russia meddling in US politics

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Expert: Russia meddling in US politics

Cybersecurity experts told a Senate Intelligence Committee panel that Russian interference with American politics did not stop after the election, and prominent Republicans have been targeted by coordinated social media attacks. CNN's Phil Mattingly reports.

Expert: Russia meddling in US politics

Cybersecurity experts told a Senate Intelligence Committee panel that Russian interference with American politics did not stop after the election, and prominent Republicans have been targeted by coordinated social media attacks. CNN's Phil Mattingly reports.