Joe Sullivan

Joe Sullivan is an American cybersecurity professional and former federal prosecutor who served as Chief Security Officer at Facebook, Uber, and Cloudflare. He currently leads Joe Sullivan Security LLC, a cybersecurity consultancy, and serves as CEO of Ukraine Friends, a nonprofit providing humanitarian aid to children in Ukraine. He also holds a part-time advisory role as Venture Partner at Costanoa, a venture capital firm, where he focuses on cybersecurity investments. He is best known for building and scaling security organizations at major technology companies and for his work at the intersection of government, technology, and security since the mid-1990s.