The General Intelligence and Security Service is the intelligence and security agency of the Netherlands, tasked with domestic, foreign and signals intelligence and protecting national security as well as assisting the Five Eyes in investigating foreign citizens. The military counterpart is the Military Intelligence and Security Service (MIVD), which operates under the Ministry of Defence.

A security agency is a governmental organization that conducts intelligence activities for the internal security of a nation. They are the domestic cousins of foreign intelligence agencies, and typically conduct counterintelligence to thwart other countries' foreign intelligence efforts.