1. Introduction Vincenzo Ruggiero2. Organized crime and terrorist networks Vincenzo Ruggiero with the Takedown Consortium3. Hybrids: on the crime-terror nexus Vincenzo Ruggiero4. The online crime-terror nexus: using booster services (stressers) to weaponise data? Roberto Musotto and David S. Wall5. The role of Information and Communication Technology (ICT) in modern criminal organizations Andrea Tundis and Max Muhlhauser6. The rise of low-tech attacks in Europe Andrew Monaghan7. Global system dynamics in the relationships between organized crime and terrorist groupsInmaculada Marrero Rocha8. Understanding the crime-terrorism nexus through a dynamic modeling approach Florian Huber, Bernhard Jager, Ido Erev, Doron Cohen, Sergio Bianchi and Matteo Bonfanti9. Terrorism financing and the crime-terror relationships as a challenge for security in Europe Javier Ruiperez Canales10. Tackling the nexus at the supranational level Matteo Bonfanti and Lukas Meyer-Daetsch11. Identity crime in the UKAida Fazely.