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Methodology for analysing the quality of the vulnerability validation mechanism in the corporate networks

The article considers the problem of determining and assessing the quality of the vulnerability validation mechanism of the information systems and networks. Based on the practical analysis of the vulnerability validation process and the analytical dependencies of the basic characteristics of the vulnerability validation quality obtained using the Bernstein polynomials, additional key indicators were identified and characterised, which make it possible to assert with high reliability about the positive progress or consequences of the vulnerability validation of the target corporate network. The intervals of these indicators were experimentally determined at which the vulnerability validation mechanism is of high quality. In addition, during the calculations, a single integral indicator was also derived to quantitatively assess the quality of the vulnerability validation mechanism of the corporate networks, and an experimental study was carried out, as well as the assessment of the quality of the automatic vulnerability validation mechanism of the db_autopwn plugin designed to automate the Metasploit framework vulnerability exploitation tool. As a result, it was proposed the methodology for analysing the quality of the vulnerability validation mechanism in the corporate networks, which allows one to quantify the quality of the validation mechanism under study, which in turn will allow real-time monitoring and control of the validation progress of the identified vulnerabilities. Also, in the study, the dependences of previously determined key performance indicators of the vulnerability validation mechanism on the rational cycle time were obtained, which makes it possible to build the membership functions for the fuzzy sets. The construction of these sets, in particular, allows making decisions with minimal risks for an active analysis of the security of corporate networks.