GEN (Ret.) Keith Alexander is the founder, chairman and co-CEO of IronNet Cybersecurity. A retired four-star Army general, Alexander previously held the highest-ranked military official of USCYBERCOM, where he led the Department of Defense's Central Security Service and the National Security Agency during the conflicts in Afghanistan and Iraq when attempted cyber-attacks against the U.S. were on the rise. President Barack Obama and Defense Secretary Robert Gates appointed Alexander to be the first commander of USCYBERCOM, a newly created military institution charged with defending the nation's security in cyberspace.