Mathematical modeling of damage function when attacking file server

• Published in: Journal of physics. Conference series 2018-05, Vol.1015 (3), p.32069
• Main Authors: Kozlov, V G, Skrypnikov, A V, Chernyshova, E V, Mogutnov, R V, Levushkin, D M
• Format: Article
• Language: English
• Subjects: Algorithms; Defects; File servers; Impact damage; Information systems; Physics; Reliability analysis; Survivability; Units of measurement
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1015/3/032069

The development of information technologies in Russia and the prospects for their further improvement allow us to identify a stable trend of expansion of both functions of the corresponding automated information systems (AIS) and the spheres of their application. At the same time, many threats to information processes in the AIS are expanding, which in turn stimulates the development of adequate means and systems for ensuring the information security of the AS and methods for assessing their protection. It is necessary to assess the ability of the system to continue its normal functioning under the conditions of permanent destructive influences and to resist them, to adapt the functioning algorithms to new conditions and to organize functional restoration or to ensure functioning with a gradual process of degradation, possibly without losing the most significant "critical" information functions. The analysis and evaluation of reliability are needed to be transformed into the analysis and evaluation of survivability. Survivability can be considered as the ability of the information system to store and restore the performance of basic functions in a given volume and for a given time in the case of a change in the system structure and / or algorithms and the conditions of its functioning due to adverse effects. One of the system survivability indicators is the reserve of survivability (S-survivability) that is the critical number of defects reduced by a unit. The authors will consider defect as a unit of measurement of damage to the information system by adverse impact. U is denoted as the critical number of defects, then S = 1-U is the index of S-survivability. The article gives the definition of an analytical formula for the function of damage and risk.