Monitorización de la autenticidad del usuario en sistemas distribuidos

A method of monitoring user authenticity during user activities in a user session on at least one application server is provided. The method being carried out in a distributed manner by means of a distributed server system. The method comprises a user modelling-process and a user-verification process. The user-modelling process is performed on a user-model server, wherein an existing user model is adapted session-by-session to user-activity data received from the application server. The user-verification process is performed on the at least one application server on the basis of the user model adapted on the user-model server. The user-verification process comprises comparing the user model with features extracted from user activity in the user session on the application server and determining a total risk-score value on the basis of the comparison. In response to the total risk-score value exceeding a given threshold, a corrective action is performed.