Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Performance evaluation component to protect information from unauthorized access to implement functions to ensure the integrity and availability of information S.V. SKRYL’ S.V. BELOKUROV V.V. ALEKSEEV A.P. SIDELNIKOV M.F. SIZINCEV The article explains the set of indicators that can be used to construct models for the study of the performance requirements component to protect information from unauthorized access in the implementation of the protection against threats compromising the integrity and availability of information in computer systems. As such indicators is proposed to use indicators to ensure the integrity and availability of information as a complex reflecting the completeness and timeliness of implementation components to protect information from unauthorized access procedures to protect against threats to information distortion and blocking, respectively. Offered as a physical parameter for the calculation of the characteristics of completeness implementation of these procedures use their volume, but as a physical parameter for the calculation of the characteristics of the timeliness of their implementation - runtime. Substantiated probabilistic representation format indicators completeness and timeliness of components protect data from unauthorized access procedures protect against threats distortion and blocking information. A possible indicator of the effectiveness of information processes in this class of systems in terms of protection from unauthorized access. Keywords: information, unauthorized access, computer system, information security, protection component, component, integrated security systems. Contacts: E-mail: zi@bstu.ru Pp. 21-25.