1. A method of operating a distributed computer system having alias detection, comprising the steps of: A) storing, in a user account store of said computer system, identification information associated with each of a plurality of user accounts, said identification information for each said user account uniquely characterizing a computer user associated with said account; B) storing a list of selected ones of said user accounts in an authorization store; C) after steps (A) and (B), initiating execution of a computer system resources access program in response to a request on behalf of a first of said user accounts; and D) after step (C), processing said request from said first user account for authorizing access to a computer system resource by performing the steps of i) comparing said identification information stored in said user account store in association with said first user account and identification information associated with each of said user accounts of said list of selected user accounts, and ii) executing said computer system access program if said compared identification information do not match, thereby indicating that said first user account is not an alias of any of said selected user accounts.