LOG ANALYSIS DEVICE, INFORMATION PROCESSING METHOD AND PROGRAM

A log information collecting unit that collects log information and traffic information output from a plurality of communication devices included in a network; a normalization processing unit that normalizes the log information and traffic information collected by the log information collecting unit; a log information analysis processing unit that extracts, and analyzes according to a predetermined rule, relative log information and traffic information from the normalized log information and traffic information, and determines whether or not there is unauthorized access; and an event information notifying unit that outputs event information including information indicating importance based on a result of the determination by the log information analysis processing unit, are included.