Russian trolls used Reddit and Tumblr, too

Facebook, Twitter, and Google aren't the only companies to face questions from lawmakers about the role their platforms played in spreading disinformation during the presidential election.

Reddit and Tumblr are now being dragged into the Senate Intelligence Committee's investigation, according to The Washington Post. The news comes just days after The Daily Beast found evidence the Internet Research Agency — the Russia-backed "troll farm" that weaponized social media to great effect during the election — also had a sizable presence on Reddit and Tumblr.