Established in 1986, DN Security Services serves the Bay Area in California. The company provides a range of security services for the construction, educational, financial, health care, retail and manufacturing sectors. It serves residential and commercial customers. DN Security Services specializes in screening, training, supervising and managing personnel. The company provides on-site security, vehicle patrol, safety training, alarm response, executive protection, retail loss prevention and earthquake disaster preparedness services. It utilizes the ProxiGuard tour confirmation system that works through radio-frequency identification tags that are placed along patrol routes. DN Security Services is a member of the California Peace Officers Association and the United States Association of Professional Investigators.