Book excerpt: Maritime Security: An Introduction, Second Edition, provides practical, experience-based, and proven knowledge - and a "how-to-guide" - on maritime security. McNicholas explains in clear language how commercial seaports and vessels function; what threats currently exist; what security policies, procedures, systems, and measures must be implemented to mitigate these threats; and how to conduct ship and port security assessments and plans. Whether the problem is weapons of mass destruction or cargo theft, Maritime Security provides invaluable guidance for the professionals who protect our shipping and ports. New chapters focus on whole government maritime security, UN legal conventions and frameworks, transnational crime, and migration. Updates throughout will provide the latest information in increasingly important field. - Provides an excellent introduction to issues facing this critical transportation channel - Three all-new chapters, and updated throughout to reflect changes in maritime security - Increased coverage of migration issues and transnational crime - New contributors bring legal security and cybersecurity issues to the fore