This is the essential book today for understanding maritime security law" -Prof. James Kraska (US Naval War College & Harvard Law School) The recrudescence of great power competition at sea raises several legal problems. Maritime Security Law in Hybrid Warfare brings together authors from various fields of international law to address such challenges in the legal intersection between naval war, military activities, maritime law enforcement, and hybrid warfare. This book explores the means for increasing legal resilience against the emerging trend of weaponization of commercial ships, underwater cables and pipelines, lawfare, and migration by hybrid adversaries.