Patent ID: 7337155

Claim:
A communication analysis apparatus comprising: a monitor for monitoring use of a network protocol by a user in a management object domain, where the user is authorized to use the network protocol; an evaluation system for calculating a behavior score of the user based on judging risk of the user leaking confidential information, tendency of the user to use network resources and likelihood of the user leaving an organization, from a monitored result of the network protocol use by the user; a storage for recording a reference time-series transition of the behavior score; a data input system for inputting a contemporary time-series transition of the behavior score into an artificial neural network, wherein the neural network is trained using the reference time-series transition and wherein the contemporary time-series transition includes a time-series transition of the behavior score from a current time to a predetermined period prior to the current time; a state analyzer for predicting a future value at a preset period after the current time based on an output of the neural network, wherein the output is determined based on the contemporary time-series transition, and judging a state of the user concerning the predetermined object of analysis based on the future value; and a data output system for outputting the judged state of the user.