Industrial Automatic Control Systems and Controllers Annotation << Back Mathematical Model of Assessment of Security of the Information System of the Enterprise A.A. Levtsova, E.A. Vitenburg The article discusses the main methods for assessing the security of an information system (IS) of an enterprise, namely: a method for assessing the security of an enterprise’s IP against unauthorized access (TAN), a method based on a model of a complex of protection mechanisms. Methods for assessing the security of an information system are formalized. A comparative analysis of software systems for assessing the security of information systems from a functional point is given. Based on the analysis, it was determined that the software shows fairly accurate results, however, the cost of these funds is high. A number of existing defi ciencies in these software systems shows the need to develop a software model for assessing the security of IP. A mathematical model has been developed that includes a method for assessing the security of an enterprise’s IS from unauthorized access (NSD), a method based on a model of a complex of protection mechanisms. This mathematical model is the basis for the formation of a software model for assessing the security of an enterprise’s IP. Keywords: information system, information security; security assessment; methods for assessing security; criteria for assessing security. Contacts: E-mail: alexandra.levtsova@yandex.ru, E-mail: e.vitenburg@ec-rs.ru Pp. 55-60.