Purpose: This paper aims to explain and present research conditions in the interdisciplinary and transdisciplinary approach of researching security sciences. Design/Methodology/Approach: The desire for a holistic explanation of research problems urges the researchers to conduct transdisciplinary research. Such an approach does not exclude carrying out monodisciplinary research. Still, the interdependence of research sub-jects and overlapping of cognitive areas of many disciplines make it

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... ry to perceive and conduct research to explain research problems from a holistic perspective. In the research process, the qualitative research strategy was used, including researching the content of the literature on the subject, dialectics, and constant comparison. Findings: Originally, conducting research was monodisciplinary and constituted the unquestionable ontological, epistemological, and axiological assumptions of the scientific disciplines emerging at that time. Still, it is more and more justified to research a holistic approach because it broadens the knowledge and results. Practical Implications: Due to the widening cognitive scope of scientific disciplines and situating the research subject on the borderline of many of them and entering the research subject into interactions with other research subjects, the necessity of researching the borderline of two or more disciplines is more and more frequently observed. It gives the research an interdisciplinary character. Originality/value: In the security sciences, where security systems are researched, one cannot conclude their entirety based on a single subsystem or element. Hence, it is well-founded to perform research from an interdisciplinary and transdisciplinary perspective to holistically consider and explain complex security problems.