Server. no one wants to make an enemy of facebook. >> reporter: facebook told cnn sophie's memo contains sensitive information that could have been used by people trying to get around facebook's safety systems. a company spokesperson also said facebook had invested $13 billion in safety and security and that 40,000 people reviewing content in 50 languages across the world, adding, we've also taken down over 150 networks seeking to manipulate public debates since 2017 and they have originated in over 50 countries with the majority coming from or focused outside of the u.s. our track record show...