Strelbitskyi M. Technology of providing functional safety of the integrated information system of the State Border Service at the stage of modernization

In the dissertation, the scientific and applied problem of ensuring the functional security of the departmental integrated information system at the stage of modernization was solved. The general concept of providing functional safety at the stage of modernization is formed, as an instrumental and methodological framework that ensures the implementation of the considered strategies. The mathematical model of information streams and method for determining the rational sequence of modernization of elements of information systems were developed. A models of the channel of information destabilizing influence and functional security of the information system and the method of distribution of means of providing functional security of information systems at the stage of modernization have been developed. The method of evaluating the vulnerability of IS in the integrated information system at the modernization stage has been further developed on the basis of developed analytical models for the components of IS properties. A set of methods for reconciling access systems in information systems at the stage of modernization has been developed. This set of methods allowed to form a methodological basis for the harmonization of the models for the differentiation of access information systems at the stage of modernization. In the framework of the methods, basic security theorems are formulated and proved. The model of information destabilizing influence and method for assessing the effectiveness of providing functional security of information systems at the stage of modernization have been further developed. The information technology for ensuring the functional security of integrated information systems at the stage of modernization was developed.