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Defense Security Command
국군보안사령부(October 7, 1977 - January 1, 1991)
국군기무사령부(January 1, 1991 - September 2018)
ActiveOctober 7, 1977 - September 2018
Country South Korea
TypeROK Armed Forces Inter-service command
Criminal investigation
Military intelligence
Part ofMinistry of Defense
Garrison/HQGwacheon, Gyeonggi-do, Korea
Motto(s)Loyalty, Honor, Unity
(충성, 명예, 단결)
WebsiteOfficial Website
General Chun Doo-hwan
General Roh Tae-woo
Lieutenant General Chang Do-yong[1]
Defense Security Command
Revised RomanizationGukgun Boan Saryeongbu
McCune–ReischauerKukkun Poan Saryeongpu
Defense Security Command
Revised RomanizationGukgun Gimu Saryeongbu
McCune–ReischauerKukkun Kimu Saryeongpu

The Republic of Korea Armed Forces's Defense Security Command (DSC) was founded as the Army Counter Intelligence Corps (commonly known as CIC or KACIC;[2][3] meaning: Special Operation Forces) on October 21, 1950, and it functioned as the primary organization within the military charged with internal security, preservation of loyalty to the regime, and deterrence and investigation of subversion.

The DSC is often known by its short name Boansa (Boan Saryeongbu) until January 1, 1991, and Gimusa (Gimu Saryeongbu) since January 1, 1991. In September 2018, it was reorganized as Defense Security Support Command.


The Defense Security Command was formally activated in October 1977.[4] This merger of the Army Security Command, the Navy Security Unit, and the Air Force Office of Special Investigations produced a single, integrated unit under the direct command and operational control of the minister of national defense.[4]

Chun Doo-hwan became chief of the Defense Security Command in February 1979, eight months before Park Chung-hee was assassinated on October 26, 1979. From his position as commander of the DSC, Chun effectively became chief investigator of the assassination, said Don Oberdorfer in his book The Two Koreas.[5] On December 12, 1979, a group of generals led by Chun arrested martial law commander General Jeong Seung-hwa, the army chief of staff, and seized key sites in the capital.

In August 2018, it was dismantled due to its relation with former South Korean president Park Geun-hye. The martial law events were reviewed in case President Park's impeachment would be dismissed.

The DSC's involvement in 1979 was considered and defined as attempt of a coup by state council.[6]


In September 2018, it was reorganized as Defense Security Support Command.


On November 11, 2011, the Seoul National Labor Relations Commission exposed a Defense Security Command member who had been illegally collecting the information of civilians registered in the National Health Insurance Corporation for three and a half years.[7]


  1. ^ During the KACIC period.
  2. ^ 體育大會어제閉幕 靑年의意氣遺憾없이發揚. (in Korean). Dong-A Ilbo. 1953-10-23. Retrieved 2021-04-03.
  3. ^ 뉴스데스크 5-60년대 육군 특무부대원들 조선시대 마패처럼 메달 갖고 다녀[전봉기] (in Korean). 2006-04-16. Retrieved 2021-04-03.
  4. ^ a b[dead link]
  5. ^ Addison-Wesley, Reading, Mass, 1997, ISBN 0-201-40927-5, p. 121
  6. ^ "뉴스1 | 계엄문건 67장 '세부자료' 공개…탄핵기각시 '실행' 수준 Detailed Martial law document 67 pages open to public". 뉴스1 (in Korean). Retrieved 2020-03-26.((cite web)): CS1 maint: url-status (link)
  7. ^ Kim (김), Tae-gyu (태규) (2011-11-12). 기무사, 건보공단서 3년6개월간 민간인 62명 개인정보 빼냈다.. The Hankyeoreh (in Korean). Retrieved 2011-11-12.