Digraph Modeling of Information Security Systems

When modeling information security systems (ISS), the vast majority of works offer various models of threats to the object of protection (threat trees, Petri nets, etc.). However, ISS is not only a mean to prevent threats or reduce damage from their implementation, but also other components - the qualifications of employees responsible for IS, the internal climate in the team, the company's position on the market, and many others. The article considers the cognitive model of the state of the information security system of an average organization. The model is a weighted oriented graph, its' vertices are standard elements of the organization's information security system. The most significant factors affecting the condition of information security of the organization are identified based on the model. Influencing these factors is providing the most effect if IS level.