It was created in 1947 under Mexican president Miguel Alemán Valdés with the assistance of U.S. intelligence agencies (namely the CIA) as part of the Truman Doctrine of Soviet Containment,[1] with the duty of preserving the internal stability of Mexico against all forms of subversion and terrorist threats.

[5] The agency was highly successful in thwarting and deterring any attempt by anti-government or pro-Soviet organizations to destabilize the country.

However, it was a notoriously controversial government entity, and it was disbanded under the presidency of Miguel de la Madrid by the hand of his secretary of the interior Manuel Bartlett Díaz in 1985.

Multiple agents were suspected (and later confirmed) of having links with criminal organizations, which included top members like Miguel Nazar Haro and Arturo "El Negro" Durazo Moreno.

Some such criminal exploits included a million dollar US-Mexico car theft ring,[6] collaborating in drug trafficking with the Guadalajara Cartel (including the protection of the infamous "Colonia Bufalo" marijuana crops),[7] training the Nicaraguan contras in drug trafficker owned ranches,[8][9][10][11][12][13][14] the murder of journalist Manuel Buendia, for investigating ties between the DFS, the CIA and drug traffickers,[15] and for having some degree of participation in, and providing cover to, the kidnapping and subsequent death of DEA agent Enrique Camarena Salazar.