During the 1990s the central body for conducting national security was the Office for the Protection of Constitutional Order (Ured za zaštitu ustavnog poretka-UZPU) which was established by the President Franjo Tuđman on May 27, 1991.

UZUP was decommissioned on March 21, 1993 when the National Security Office (Ured za nacionalnu sigurnost-UNS) was established by the second President's decision.

UNS was put into the legal framework on May 17, 1995 by the enactment of the Law on the National Security Office (Zakon o uredu za nacionalnu sigurnost).

KOOZ was preparing the annual plan of the intelligence community which consisted of projects and operative actions in which performance had to be attend by two or more services.

In 2002 the Croatian Parliament passed a Law on Security Services of the Republic of Croatia (Zakon o sigurnosnim službama Republike Hrvatske) and the National Security Strategy of the Republic of Croatia (Strategija nacionalne sigurnosti Republike Hrvatske).