Sen. Mark Warner said Facebook's disclosure that it sold political ads to a Russian troll farm was just the "tip of the iceberg" when it came to election interference on social media.
원문출처 : http://www.cnn.com/2017/09/07/politics/warner-facebook-russia-hacking/index.html
원문출처 : http://www.cnn.com/2017/09/07/politics/warner-facebook-russia-hacking/index.html