Since its founding in 1999, International Security Services, Inc. (ISS) has been a reliable, full-service provider of security-related services for our clients. First launched as a licensed, Private Investigation services provider, ISS has evolved and expanded its services to include a full range of quality, dependable security services, all provided by the most well-trained professionals in the industry. When customers choose ISS investigative, security, and training services, they can rest assured that their security-related interests are in good hands.