Hybrid warfare is becoming a long-term strategic challenge for NATO and the EU. This book examines its conceptual foundations, actors and technologies from a holistic, systemic perspective. In particular, new, disruptive technologies have a catalytic effect on hybrid methods and tools. 19 Technologies prove to be particularly relevant. They improve the initial conditions for hybrid action, expand the arsenal of hybrid actors and improve the scope and prospects for success of their activities. Hybrid warfare is becoming a long-term strategic challenge for NATO and the EU. This book examines its conceptual foundations, actors and technologies from a holistic, systemic perspective. In particular, new, disruptive technologies have a catalytic effect on hybrid methods and tools. 19 Technologies prove to be particularly relevant. They improve the initial conditions for hybrid action, expand the arsenal of hybrid actors and improve the scope and prospects for success of their activities. The Editor Colonel (ret.) Ralph Thiele is Chairman of the Berlin based “Politisch-Militärische Gesellschaft” (Political-Military Society), President of EuroDefense (Germany) and CEO of StratByrd Consulting. In several decades of politico-military service he has gained an extensive broad political, technological, academic and military background. Colonel (ret.) Ralph Thiele is Chairman of the Berlin based “Politisch-Militärische Gesellschaft” (Political-Military Society), President of EuroDefense (Germany) and CEO of StratByrd Consulting. In several decades of politico-military service he has gained an extensive broad political, technological, academic and military background.