The purpose of this article is to indicate the impact of the use of scientific theories on cyberspace. The outline of the non-scalable network, outlined in this paper, is the basis for the operation of a number of IT tools used in cyberspace. By briefly referring to the origins and development of network theory, the author presents the advantages and disadvantages of this theory and its implications for today’s IT systems. On the example of several commercially available IT solutions, the author points to the opportunities that qualified operators of these systems have to address in cyberspace in order to minimize cybercrime and terrorist threats, as well as data collected on the Internet of Things (IoT). The results of IT professionals show that such solutions will be an increasingly important source of knowledge for cyber security and counter-terrorism services. The theory of non-scalable networks is also the basis for the functioning of the Polish Armed Forces network and effectively enhances the ability to monitor significant network nodes, optimizing the strengths and resources used for this purpose, as well as reducing the time needed to detect and respond to possible computer incidents. This is a very interesting research area whose exploration can bring many significant cyber security solutions, as exemplified by the results of the research presented in this article. The increasing importance of cyberspace cannot be underestimated by the Armed Forces, which define cyberspace as the fifth dimension of armed conflict – the most unpredictable and unmatched and the most effective with minimal effort. And most importantly – providing almost complete anonymity. Hence, it should be regarded as the most influential space of military activity.