https://techcrunch.com/2017/09/28/twitter-russian-linked-accounts-congressional-briefing/

Following its meeting with members of the Senate and House’s respective intelligence committees, Twitter has issued new details on the information it is providing to aid the congressional investigations into Russia’s potential interference in the 2016 U.S. election.

Twitter, like Facebook, is being examined for its part in spreading content created or paid for by Russian state-sponsored entities with the desire to influence U.S. politics.