http://tech.newstatesman.com/business/zuckerberg-facebook-arms-race-russia

Facebook is engaged in an arms race with Russian actors attempting to sow discord through its platforms, Mark Zuckerberg told senators last night.

In a session spanning nearly five hours, the billionaire founder of the world’s biggest social media firm said his number one priority is now preventing the sort of election meddling seen in the 2016 US election from happening again.