Abstract. The conducted theoretical and analytical study, which included acquaintance with the achievements of domestic and foreign scientists on ensuring the personnel security of banks and assessing the personnel security of the banking sector of the economy, allowed to develop oriented graphical models and corresponding reachability matrices, and served as a basis for hierarchical ordering of key threats to bank personnel security. The hierarchical ordering of threats to the personnel security of the banking sector of the economy is based on the application of the graph theory method. The models developed give an idea of the need to implement safeguards against key threats, which is important in view of resource constraints and maximizing the effectiveness of security actors. The result is averaged for most domestic banks, as each of them is influenced by the external environment and changes caused by internal processes. A mechanism for counteracting the influence of external and internal threats on the personnel security of banks has been constructed, which takes into account the current trends in the development of the banking sector. The application of system analysis and graph theory made it possible to hierarchically regulate the impact of key threats on personnel security, which became the basis for the development of a model that graphically determines the priority of developing and implementing security measures for each threat, and justifies the possibility of applying one of the options passive protection and active protection. As a result of the theoretical and analytical study, a number of key external and internal threats to personnel security of banks have been regulated and identified. By applying graph theory and mathematical modeling hierarchically ordered and determined the severity of the impact of threats on the personnel security of banks, which subsequently allowed to create a defense mechanism to counter them.
Keywords: bank personnel security, bank system, threat, security, crisis situation, mechanism.
JEL Classіfіcatіon D81, G21, F29, L20
Formulas: 16; fig.: 3; tabl.: 19; bibl.: 16.