The Centro de Investigación y Seguridad Nacional (English: Center for Research and National Security (CISEN) is a Mexican intelligence agency controlled by the Secretary of Interior (Secretario de Gobernación). CISEN was established in 1989 after its predecessors ceased to operate. Although the National Security Act considers the Center as the main security agency, the Navy, Army, Air Force and the Office of the Attorney General maintain intelligence bodies dedicated to assists the functions of each one.
Formally, CISEN has the function of articulating the national intelligence, and mistakenly has been compared to the current CIA or the Soviet KGB. Its functions include espionage, counter-espionage, analysis of intelligence, proposing to the National Security Council the National Agenda for Risks, among others.