Some of the documents included in collection were initially classified by the State Security Service. In September 2015, all documents were declassified. As mentioned in the Public Report for 2016 by the Security and Intelligence Agency of Republic of Croatia (SOA), “the Agency's intention is that these valuable archival documents become available to the scholarly and general public, thereby enabling a clearer overview of that period of Croatian history” (SOA. 2016 Public Report, p. 42).

A notice posted on the Agency's web pages on 25 September 2015 also pointed out that the acquisition of the State Security Service Collection by the Croatian State Archives “distances the SOA from any connection with the activities, methods and traditions of the former State Security Service.” It was concluded that after doing so, “the SOA has been recognised as a modern security-intelligence agency of a democratic state which adheres to the practices of services in states with long democratic traditions where this pertains to declassification of documents for which there are no longer grounds for maintaining confidentiality.” It led to increased possibilities for research into the phenomenon of cultural opposition and dissent, as well as state surveillance of such activities.