The United Nations Security Management System (UNSMS) comprises more than 50 member organizations. The goal of the United Nations Security Management System is to enable the activities of UNSMS organizations within acceptable levels of security risk. UNSMS organizations are Inter-Agency Security Management Network (IASMN) de facto members, 15 of which are IASMN Steering Group members.

The UNSMS plays a fundamental role, not only as clients but also in guiding, supporting and being recipients of UNDSS’ services. UNDSS provides leadership for the UNSMS. The Department works with Executive Heads, Designated Officials for security, and Security Representatives of all UN entities across the UNSMS. This critical network under the IASMN is responsible for system-wide security policy developments underpinning the work of the UNSMS. The IASMN holds its meeting four times a year, including two full IASMN sessions and two Steering Group sessions.