“…The connection and interdependence of different infrastructure elements among each other highlights the common goals of national and European community security in terms of critical infrastructure protection (Rehak et al, 2016;Stergiopoulosa et al, 2016;Besenyo, Feher, 2020). Legal norms of national legislation must not conflict with European treaties, laws adopted by European institutions, agreements concluded by the EU with third countries and international organizations, and the case law of the European Court of Justice (Borzel, 2016;Shumilo et al 2021;Poustourli, 2016;Skara, Hajdini, 2021).…”