Nathaniel Gleicher is an engineer and lawyer and works at the intersection of technology, policy, and law. He has taught computer programming, built and secured computer networks, prosecuted cyber crime at the U.S. Department of Justice, and served as director for cybersecurity policy at the National Security Council (NSC) in the White House. At the NSC, he developed U.S. government policy on key technology and cybersecurity challenges, including encryption, cyber deterrence, internet governance, and network security. Since leaving government, he served as head of cybersecurity strategy at Illumio and is currently the head of cybersecurity policy at Facebook.