A method for detecting the invalid access to a computer network is disclosed. The method preferably operates in a computer network having computer servers operating on different operating systems and a plurality of computer devices. Each computer device is managed by a computer server at the operating system level. The computer network includes a plurality of information databases that contain information associated with the users and with the computer devices of the computer network. On each computer server, the method, system, and program generates a set of identifying files for each computer device managed by the computer server. All sets of identifying files from the plurality of computer servers are next gathered into a unique central violation database. Links are created between each set of identifying files and the plurality of information databases in order to determine a level of network access violation for each computer device. Violation messages for each computer device are generated based on the level of network access violation.