This book provides students, scholars, professionals, and consultants of criminal justice and security studies with comprehensive information about and in-depth analysis of contemporary issues in transnational crime and global security. The first volume covers such core topics as cybercrime, human trafficking, and money laundering and also contains infrequently covered but nevertheless important topics including environmental crime, the weaponization of infectious diseases, and outlaw motorcycle gangs. The second volume unique in its coverage of security issues related to such topics as the return of foreign terrorist fighters, using big data to reinforce security, and how to focus efforts that encourage security cooperation.