The behavior of agents to ensure financial security on the basis of game theory was analyzed, the winning strategy taking into account risk and uncertainty was determined. Using Data Mining the useful functions of this technology were identified to ensure financial security: suspicious transactions determination, credit risks analysis, client account reliability analysis, financial indicators predicting and risks control. A comparison was made of the assessment of the effectiveness of various data mining algorithms on the nature of financial transactions and decision-making procedures in the financial security system. It was proved that the development of information technology has created a whole range of vulnerabilities in the financial system, in particular, has transformed the form of money in modern conditions - the emergence of a cryptocurrency. The influence of the formation and development of cryptocurrency on financial security at all levels of the economy: micro and macro was analyzed.
Current study aims to analyse the Russian-Ukrainian conflict and related economic and political sanctions in the framework of game theory, debate the possible outcomes and to suggest the measures, which could contribute to the successful solution of the conflict. “The chicken dilemma” and “the dollar auction game” have been selected among various models for deeper analyse as matching the starting criteria and possible rational options for conflict endgame. The criteria of success and predicted success scenarios are seen different, but as the authors see it, in theory both Russia and the EU could be motivated to “pull back”. However, their willingness not to “lose the game” is determined in real terms by the “breaking points” that both parties to the conflict would like to avoid.