Dr. Ariel Koch is a postdoctoral researcher and a lecturer at the Lauder School of Government Diplomacy and Strategy and a fellow researcher at the International Institute for Counter-Terrorism (ICT) at Reichman University. Dr. Koch is a specialist in transnational violent extremist ideologies and movements, and his research focuses on the nexus between Islamist extremism, right-wing extremism, and left-wing extremism.

Dr. Koch is also the Director of Violent Extremism Research at ActiveFence, a leading Trust and Safety provider for online platforms, protecting over three billion users globally every day in over 100 languages from malicious behavior and content, including child safety and exploitation, disinformation, hate speech, terror, nudity, fraud, and more. Dr. Koch teaches undergraduate courses and lectures on these topics to different audiences, including government officials, academia, and more, both in Israel and abroad.