A crowded area with many children
UNDSS team in Gaza facilitating a high-level visit to a UN field site. UNDSS

Who we are

As a global leader in security risk management principles, UNDSS is responsible for providing leadership, operational support and oversight of the United Nations security management system (UNSMS) worldwide. Present in 131 countries where UN operates, UNDSS enables the safe and effective delivery of United Nations programmes and activities in the most complex and challenging environments, while maximizing resources.

Our Mission

We enable United Nations system operations through trusted security leadership and solutions.

Our Vision

Security for the UN, for a better world.

Understanding UN Security

The United Nations Security Management System (UNSMS) enables the activities of UNSMS organizations within acceptable levels of security risk. The UNSMS unites over 50 member organizations, with a primary objective of facilitating the operations of these entities while maintaining an acceptable level of security. Fifteen of these members serve as key decision-makers within the Inter-Agency Security Management Network (IASMN), which is an integral part of the UNSMS. Within this framework, the UNSMS plays a pivotal role in guiding, supporting, and acting as recipients of the UN Department of Safety and Security (UNDSS) services.

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United Nations Security and Safety Services: Safeguarding Global Diplomacy

For 77 years, we in the United Nations Security and Safety Services have safeguarded the spaces where global decisions are made. We ensure that world leaders can meet, deliberate, and act in safety and confidence. From the General Assembly in New York to major diplomatic events around the world, our presence may be quiet, but it is essential. We ensure that dialogue across peoples and nations can take place safely and effectively.

20 Years of UNDSS - Message from the UN Secretary-General

As the United Nations Department for Safety and Security (UNDSS) marks its 20th anniversary, Secretary-General António Guterres shares his message of gratitude to all who help the United Nations stay and deliver in the world’s most challenging places.

UNDSS signs the Declaration for the Protection of Humanitarian Personnel

On 21 September 2025, Under-Secretary-General Gilles Michaud participated in Australia’s vigil and launch of the Declaration for the Protection of Humanitarian Personnel, a political commitment by over 100 Member States developed by a Ministerial Group...

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20 Years of UNDSS: Behind Every UN Operation

United Nations Security Explained