Abstract: The term security itself is a very well-served phenomenon, as a consequence of all the changes and characteristics that determine it. In support of this view, a large number of authors have dealt with the notion of terrorism and organized crime, in relation to the very notion of security. "This state of affairs was influenced by two reasons. The first is that the concept of security, due to its many characteristics, is much more difficult to define than the others listed, and the second is that most authors are satisfied with conventional, extremely general and insufficiently precise formulation from international documents and numerous encyclopedic editions, according to which security " opposite to endangerment ", ie" absence of endangerment ".