https://techcrunch.com/2017/10/09/googles-probe-into-russian-disinformation-finds-ad-buys-report-claims/

Google has uncovered evidence that Russian operatives exploited its platforms in an attempt to interfere in the 2016 U.S. election, according to the Washington Post.

It says tens of thousands of dollars were spent on ads by Russian agents who were aiming to spread disinformation across Google’s products — including its video content platform YouTube but also via advertising associated with Google search, Gmail, and the company’s DoubleClick ad network.