The most incompetent department in the whole of ogodyes's SCPF. They never do their job and always avoid it. Extremely inactive and usually messes with MTF duties.
by JoeMamaBenDover November 03, 2019
The largest and most efficient combative department in the Foundation, home to the legendary Strategic Security Unit. Normally found in the Class-D Containment, they are the forefront to the protection of the Foundation against rioters. Certain elements may also assist in protection against raids, if need be.
by KindleKramer November 01, 2019
Creepy fuckers in the SCP Foundation that will stalk, interrogate and murder you at the first sign of trouble. Supposedly don't exist.
Person 1: "Hey did you hear about Dr. █████ getting dragged in by the Internal Security Department?" Person 2: "Who's ISD?"
by iiGibbyz December 09, 2020