Security Department, SCP Foundation Wikia

The Security Department (SD) is a division of the SCP Foundation, consisting of agents tasked with guarding the Foundation's secret bases and containment facilities. Their job duties include preventing containment breaches (SCPs escaping from the site), keeping D-class personnel under control and forcing them to cooperate in laboratory experiments, and defending the site from external attacks by hostile forces (whether that be an enemy Group of Interest or something more anomalous).

Security Department, SCP Database Wiki

SCP – Containment Breach SCP Foundation Security Guard Death Wiki

Scp Containment Breach, Secure copy, personification, SCP

ISD Divisions and Units (Disambiguation) - SCP Sandbox III

SCP Foundation Artbook: Yellow Journal by scp-wiki.wikidot.com

The Worldbuilding of the SCP Foundation – Stephen Escher

Security Department, SCP: Roleplay Wiki

SCP Wiki Tools

Foundation Departments - SCP Foundation

SCP - What is SCP?

DEPARTMENT-CON 2022 - SCP Foundation