Thread by @businessinsider

How to watch Facebook, Twitter, and Google discussing Russian election meddling read.bi/2zaTJuL

Sen. Mark Warner says he's viewed data that Twitter bots represent 12-15% of Twitter accounts

Sen. Mark Warner: "Your companies in many ways know more about Americans than the United States government does"

Thanks to Instagram ads, Russia-backed Internet Research Agency have reached a grand total of 150M Americans through Facebook #techhearings

Sen. Dianne Feinstein on social media misuse by foreign actors: "You have to be the ones to do something about it. Or we will."

Sen. Dianne Feinstein: "We're at the beginning of what could be cyber war."

Sen. Angus King: "I'm disappointed that you're here and not your CEOs."

When exactly was Facebook first aware of Russia-linked interference?

Facebook says "We were aware ... prior to and through the election."

Asked how much money they made from legitimate ads than ran alongside Russian propaganda, FB/GOOG/TWTR say they're not sure #TechHearings

Facebook general counsel reiterates the social network's promise to double number of staff devoted to platform oversight

Sen. Richard Burr makes closing statement: "Don't let nation-states disrupt our future, and you're our front line of defense." #TechHearings