Acceleration of calculation of an estimate of information system user's security at the expense of improbable ways of socio-engineering attacks elimination

In the field of information security it is necessary to develop scientific and proved and mathematical methods and the models reflecting specifics of subject domain for ensuring activity of experts, allowing to automate the analysis of information systems user’s security from socio-engineering attacks. The purpose of this paper is consideration of a method of of success probability search of socio-engineering attacking impact on each user in the "personnel - information system - critical documents" complex where users and communications between them are presented as graph. The algorithm assumes search of various acyclic ways between two users.