Since the beginning of the millennium the most important International Organizations have included in their political and normative agenda the phenomenon of violent radicalization as one of the greatest challenges to contemporary security. The processes undertaken by individuals and collectives, which lead them to assume extreme ideologies that justify the use of force, have grown exponentially in quantitative and qualitative terms, and frequently, as indicated by the Spanish Security Strategy of 2017, constitute the previous stage for the establishment of active links with terrorist groups and organizations.