1991 – 2002

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). Goals and tasks of the intelligence community in Croatia were also determined by the Joint National Security Committee (Stožerni odbor nacionalne sigurnosti-SONS) and the Intelligence Community Coordination Committee (Koordinacijski odbor obavještajne zajednice-KOOZ). The task of SONS was directed and coordinated by the work of government ministries in matters of national security, while KOOZ was responsible for the implementation of tasks received from SONS. The core of the intelligence community consisted of four departments that were involved in intelligence work:

• Croatian Intelligence Service (Hrvatska izvještajna služba-HIS)
• Service for the Protection of the Constitutional Order of the Ministry of Interior (Služba za zaštitu ustavnog poretka Ministarstva unutarnjih poslova RH-SZUP)
• Security Intelligence Service of the Ministry of Defense (Sigurnosno-informativna služba Ministarstva obrane RH-SIS)
• Intelligence Directorate of the General Staff of the Armed Forces (Obavještajna uprava Glavnog stožera Oružanih snaga RH-ObU GSOSRH)

The Croatian President was giving guidelines for the work of UNS and the Croatian intelligence community. The director of UNS and state ministers were determining tasks of the services for which they were responsible. 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. SONS was approving the annual work plan of the intelligence community and supervised its execution. Apart from the above-mentioned UNS and other agencies, a wider range of security system consisted of the criminal police, military police, customs service, the financial police, whose representatives could call the session of KOOZ.

2002 – 2006

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). The law established three security services:

• Intelligence Agency (Obavještajana agencija-OA)
• Counterintelligence Agency (Protuobavještajna agencija-POA)
• Military Security Agency (Vojna sigurnosna agencija-VSA)

In order to achieve cooperation between the President and the Croatian Government in guiding the work of the security services as well as to harmonize the operational work of the security services, the Council for National Security (Vijeće za nacionalnu sigurnost) established the Council for Coordination of Security Agencies (Savjet za koordinaciju sigurnosnih službi). Special Office of the Council for National Security (Ured Vijeća za nacionalnu sigurnost) was established to perform professional and administrative work for the National Security Council and the Council for Coordination of Security Agencies.

2006 – Present

The 'Security and intelligence system' was reformed in mid-2006 by adopting the Law on Security and Intelligence System (Zakon o sigurnosno-obavještajnom sustavu). The law established two security services that are still active today:

• Security and Intelligence Agency (Sigurnosno-obavještajna agencija-SOA)
• Military Security and Intelligence Agency (Vojna sigurnosno-obavještajna agencija-VSOA).