https://www.cnbc.com/2017/11/02/russia-meddling-tech-is-soul-searching-former-twitter-ceo-says.html

If foreign interference on internet platforms isn't affecting tech's bottom line, it doesn't mean executives at Facebook, Twitter and Google aren't concerned about it.

"There's an extraordinary amount of soul searching inside these companies about what's happened," former Twitter CEO Dick Costolo told CNBC's "Squawk on the Street" Thursday.