Miroslav Šeparović was born on 18 July 1958 in Blato[2] on the island of Korčula where he finished elementary and high school.

[1][3] After graduation, Šeparović worked as a legal clerk in the Blato Winery in Zagreb (1981-1983), and then in the Military building institution Prečko (1984-1986).

In 1998, he got a job at the Croatian Intelligence Service and become deputy head of the National Security Office.

In 2018, Committee on Ethics in Science and Higher Education (CESHE) concluded that Šeparović was guilty of plagiarism since his doctoral thesis contained repeated instances of “incomplete and opaque citations” of other people’s work.

Whereas, CESHE chairman Ivica Vilibić considered that it was a new development in an ongoing effort to weaken the Committee.