Here are the days and times of the hearings:

Tuesday, Oct. 31, at 2:30 p.m. ET: Crime and Terrorism Subcommittee (Chairman Lindsey Graham, R-S.C.) of Senate Judiciary Committee hearing on “Extremist Content and Russian Disinformation Online: Working with Tech to Find Solutions.”

Wednesday, Nov. 1, at 9:30 a.m. ET:
Senate Select Intelligence Committee (Chairman Richard M. Burr, R-N.C.) hearing on social-media influence in the 2016 U.S. elections and what steps they are taking to mitigate foreign interference in the 2018 election cycle and beyond.

Wednesday, Nov. 1 at 2 p.m. ET:
House Select Intelligence Committee (Chairman Devin Nunes, R-Calif.) hearing on “Russia Investigative Task Force: Social Media Companies.”