General Security Service, Inc.is a privately held security company established in 1944. We are a third generation owned and operated corporation. Headquartered in Wilmington, California GSS is a longtime leader in the security services industry, providing highly trained security forces, and delivering expert business services to a constantly growing list of commercial, industrial and government organizations. Our growing and diverse client base is a testament to our reputation for providing an excellent level of quality service and professionalism.