Kenneth Geers is a Senior Research Scientist at Comodo, an Ambassador at the NATO Cooperative Cyber Defence Centre of Excellence in Tallinn, Estonia, and a Senior Fellow at the Atlantic Council. Geers is also an affiliate at the Digital Society Institute-Berlin and a professor at TSN University of Kyiv. He holds over 20 years of experience within the U.S. government, specifically at the U.S. Army, the National Security Agency, Naval Criminal Investigative Service, and NATO. He served as an expert on the Tallinn Manual on the International Law Applicable to Cyber Warfare. Greers is also the author of Strategic Cyber Security and the Editor for both Cyber War in Perspective and The Virtual Battlefield.