|Formed||August 1, 1993|
|Jurisdiction||Government of Brunei|
|Headquarters||Jalan Utama Mentiri, Kampong Sungai Tilong|
|Parent agency||Brunei Prime Minister's Office|
The Internal Security Department is Brunei's domestic intelligence agency, which is under the Prime Minister's Office. They are known to detain anyone suspected of being a threat to Brunei's national security threat for as long as needed.
They are involved in both criminal and intelligence matters.
The ISD was created to replace the Royal Brunei Police's Special Branch division, which was disbanded on August 1, 1993.
National intelligence agencies