https://www.cnet.com/news/can-facebook-mark-zuckerberg-new-hires-take-on-troll-farms-and-data-privacy-after-cambridge-analytica/ >Facebook's plan to guard itself against misuse of its free service includes doubling the number of people working on cybersecurity and content moderation to 20,000 employees in 2018, no small feat since finding qualified tech workers is already difficult. >But cybersecurity and privacy experts say Facebook faces a bigger challenge: making sure all of those workers are actually focused on fixes to the problems that have put CEO Mark Zuckerberg and the world's largest social network at the center of multiple controversies. That includes concerns over user data privacy, fake news, hate speech and election tampering by foreign governments.