Clusit members represent more than 500 companies and organizations. It collaborates, at the national level, with various Ministries, Authorities and Institutions, the Postal Police and other control bodies. It also carries out intensive support and exchange activities with Industrial Confederations, numerous Universities and Research Centers, and Professional and Consumer Associations. In the international arena, Clusit participates in many initiatives in collaboration with CERTs, CLUSIs, the European Commission, ITU (International Telecommunication Union), UNICRI (United Nations Agency dealing with crime and criminal justice) and actively supports the activities of ENISA (European Union Agency for Network and Information Security).