Executives from Facebook, Google and Twitter are set to publicly testify Tuesday before congress on Russian interference during the 2016 presidential election.

The companies’ executives are scheduled to appear on Tuesday and Wednesday. The tech giants are expected to talk about on how to combat extremist content and fake news and ads from Russia on their platforms on Tuesday, and how Russia interfered in the 2016 presidential election on Wednesday. Tuesday’s hearing will be before the Senate Committee on the Judiciary and the Subcommittee on Crime and Terrorism, while Wednesday's hearing will be before the Senate Intelligence Committee.

Watch Twitter, Facbook Google Testimony Livestream Online

Tuesday’s hearing will begin at 2:30 P.M. EST on the Senate Committee on the Judiciary website and on C-SPAN (with provider log in). 

Wednesday’s hearing will begin at 9:30 A.M. EST and will livestream on the Senate Intelligence Committee’s website and on C-SPAN.

Russia’s Use Of Google, Facebook and Twitter To Spread Misinformation

Information Facebook found about Russia’s use of its platform to spread misinformation will be delivered by the company’s General Counsel Colin Stretch.

In September Facebook told Congress it discovered $100,000 in ad spending from June 2015 to May 2017, which were linked to the 3,000 ads. Those figures were significantly off. It was reported on Monday that approximately 126 million people in the U.S. may have been exposed to posts, stories and other content created by groups linked to the Kremlin on Facebook. Earlier this month, Facebook said the ads has reached as many as 10 million Americans.

Twitter may send Colin Crowell, vice president for global public policy, to speak before the Senate Intelligence Committee. The company previously said it discovered 22 accounts believed to be associated with Russian trolls. Those accounts led Twitter to other 179 related or linked accounts.

As for Google, the company was said to have been investigating the extent to which Kremlin actors used the platform’s websites to spread misinformation to U.S. voters. This month, the search engine company discovered Russia-backed ads on YouTube, Gmail and Google Search. Google reportedly found 18 YouTube channels that were linked to Russian propaganda campaigns.