1. European Political Strategy Centre: Building an Effective European Cyber Shield, p. 16 (2017)
2. European Commission: The Directive on Security of Network and Information Systems (NIS Directive). In: Union, O.J.o.t.E. (ed.), vol. L194, pp. 1–30 (2018)
3. European Commission: July Infringements Package: Key Decisions. July Infringements Package: Key Decisions, (2018)
4. Hathaway, O.A., Crootof, R., Levitz, P., Nix, H., Nowlan, A., Perdue, W., Spiegel, J.: The law of cyber-attack. Calif. Law Rev. 100, 817–886 (2012)
5. Nagurney, A., Shukla, S.: Multifirm models of cybersecurity investment competition vs. cooperation and network vulnerability. European Journal of Operational Research 260, 588–600 (2017)