Facebook, Twitter, Google及びMicrosoftが共同で原理主義コンテンツの排除活動

下記の記事が出ている。

　Facebook, Twitter, Google and Microsoft team up to tackle extremist content
　Guardian: 6 December, 2016
　https://www.theguardian.com/technology/2016/dec/05/facebook-twitter-google-microsoft-terrorist-extremist-content

　Microsoft, Google, Facebook Form Historic Alliance Against Online Terrorism
　Softpedia: December 6, 2016
　http://news.softpedia.com/news/tech-giants-join-forces-for-historic-alliance-against-online-terrorism-510751.shtml