The National Security Adviser is a senior official in the cabinet of the President of Nigeria who manages national security on behalf of the President and serves as his chief advisor on all matters that are vital to the very survival of the state. The position is a statutory member of the Presidency, National Security Council and Federal Executive Council.

The State Security Service (SSS), self-styled as the Department of State Services (DSS), is a security agency in Nigeria and one of three successor organisations to the National Security Organization (NSO). The agency is under the Presidency of Nigeria, and it reports its activities direct to the President, office of the ONSA, headquartered in Abuja.