Abstract: An installed vehicle security system having at least one multidirectional atomizing nozzle positioned on the vehicle adjacent a target zone. A disabling fluid is held in a pressurized canister in fluid communication with the nozzles. Foot and hand triggers, including remote triggers, are provided for releasing an amount of disabling fluid from the nozzles effective to saturate the target area. The canister is under constant pressure, independent of the vehicle's engine; the triggers are powered independently of the vehicle's ignition system; and the nozzles are pre-positioned so that the security system of this invention is constantly ready for rapid and unobtrusive actuation. A detachable vehicle security system is also provided.