Security Management System (SecMS) in Croatia Control Ltd. (CCL) ensures the security of staff, property, and equipment with the aim of preventing unlawful interference with service provision, as well as the protection of business data it receives, produces or in any other way uses, so that the access to that data is restricted to authorized persons only (the need-to-know principle).

SecMS deals with threats which are directly aimed at the ATM system, but also with the fields in which ATM is crucial for the prevention of threats or resolving the threats aimed at other parts of the aviation system, especially when they are of national or international significance.

SecMS introduced in CCL also supports airspace and airport security in the fields regulated by the National Civil Aviation Security Program, and it plays an important role in creating plans for business/service provision continuity and business recovery (resuming normal business operation).