Department of Intelligence and Security (DRS)
The Department of Intelligence and Security (DRS) (Arabic: دائرة الإستعلام والأمن) () was the Algerian state intelligence service. Its existence dates back to the struggle for independence. In 2016, it was dissolved by President Abdelaziz Bouteflika and replaced by the Direction des services de sécurité. History

Formation, MALG

The DRS was formed as the Ministère de l'Armement et des Liaisons générales (MALG) during the Algerian War for independence,  under the direction by Abdelhafid Boussouf, whose role was to lead both the national and international networks of the Front de libération nationale (FLN). After independence in 1962, and particularly with the accession of Houari Boumédiène to the leadership of the country in 1965, the Algerian intelligence services greatly professionalised and institutionalised. MALG was organized under five departments : 
 DTN: National Communications department
 DDR: Documentation and Research department, responsible for military research
 DVCR: Vigilance and Counter Intelligence
 DLG: Army post network 
 Management of logistics for acquiring, storing, and routing weapons and equipment. Sécurité Militaire
This change of internal organization was modeled to a large extent on the intelligence and internal security services of the then Eastern bloc Nations. Renamed (), its directives were:
 Counter-espionage
 Internal security
 Foreign intelligence

The first appointed Chairman of  Military Security was the colonel Kasdi Merbah who stayed until the death of president Boumédiène in 1978. Then he was succeeded for a short time by colonel Yazid Zerhouni. President Chadli Bendjedid, who mistrusted the SM, dismantled it and renamed it the DGPS. Chadli  appointed to the chair of the DGPS general Lakehal Ayat, reorganising the agency to work solely in foreign intelligence. DRS
The riots and turmoil of October 1988 caused president Chadli Bendjedid to dismiss General Ayat, who was succeeded by General Betchine. His tenure saw major political change, beginning with the advent of a multi-party political system and the rise of the Islamist movement of the FIS. Betchine was then replaced by Mohamed Mediène in November 1990, who served until 2015. Following this, the Services changed its name once again, from DGPS to DRS. Outside observers have charged that Mediène was one of the junta of generals who forced the cancellation the 1991 elections which the Islamists were set to win, plunging the nation into a war against the Islamist, and greatly increasing the power of the military—and the DRS—in Algeria's government. It was in this period that the DRS reasserted its role in internal security, becoming an active player in the Algerian Civil War of the 1990s. It reportedly had as many as 100,000 agents that infiltrated many segments of society. DRS agents infiltrated and manipulated terrorist groups, and repressed different Islamist groups. It also blocked negotiations both by the ruling and opposition powers with the FIS. In September 2013, the DRS was reorganized to bring more of its power under the state's control. In 2016, it was dissolved entirely and replaced. Chairmen of the DRS

 Abdelhafid Boussouf from 1954 to 1958
 Houari Boumédiène from 1958 to 1965
 Kasdi Merbah from 1965 to 1978
 Yazid Zerhouni from 1979 to 1981
 Lakehal Ayat from 1981 to 1988
 Mohamed Betchine from 1988 to 1990
 Mohamed Mediène from 1990 to 2015
 Athmane Tartag since 2015 to 2019

References

External links
Algerians count cost of burying the past. Financial Times. July 4, 2007. Algérie. Pratique persistante de la torture par la Sécurité militaire dans des lieux tenus secrets. Amnesty International. 10 June 2007. Algeria: Unrestrained powers: Torture by Algeria's Military Security. Amnesty International. Index Number: MDE 28/004/2006. 9 July 2006. Immigration and Refugee Board of Canada. Algeria: The anti-terrorism campaign conducted by the army between 1997 and 2000, including the army's strategy, 27 August 2007. DZA102593.E. Online. available at UNHCR Refworld, accessed 30 March 2009. Martin Evans, John Phillips. Algeria: Anger of the Dispossessed. Yale University Press (2008) 
Hugh Roberts. Demilitarizing Algeria. Carnegie Papers Middle East Program, Number 86. May 2007. Yahia H. Zoubir, Haizam Amirah Fernández. North Africa: Politics, Region, and the Limits of Transformation. Routledge (2008)   pp. 299–300

Government agencies established in 1954
Government agencies disestablished in 2016
Law enforcement in Algeria
Algerian intelligence agencies