The history of International Security Agency

International Security Agency was established in 1998 by the current owner Geert Sijtzema. Throughout the years, we have grown into a full service provider in the area of Object Security, Event Security, Enforcement & Supervision and Hospitality Services. The company from Frysian origin, is located in Amsterdam, from where our clients are serviced. We have over 750 employees to meet the market’s demand and the quality requirements.

Since the year 2000, we have grown into a professional player in the all-round security- and safety market. We have specialized in Object Security, Event Security and Enforcement & Surveillance. Hospitality Services have always remained important in this. Through our focus on providing qualitative services, we now operate actively in sectors as the national government, local- and semi-government, multinationals, top sport, media, live entertainment and music-driven events.

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