The Security Faction in Insurgency is represented by an ambiguous group of American fighters. The Security faction is largely equipped with Western weaponry. They are the opponents of the Insurgent Forces.
The Security Forces use a variety of infantry weapons and equipment ranging from assault rifles, machine-guns, sniper rifles, shotguns, and rocket launchers.
- The Security forces replace the United States Military from the Insurgency Mod, they were most likely replaced because having Security forces would allow for access to a greater amount of weapons.
- During the early-access phase of Insurgency's development, the Security faction was represented by Private Military Contractors, Iraqi Security Forces, and the United States Marines.
- The insignia of the Security faction looks very similar to that of the real life SAS.
- The old Security insignia during the early-access period was the logo of the United States Marine Corps.