ACCESS CONTROL SYSTEM BASED UPON BEHAVIORAL PATTERNS

A method and apparatus for detecting behavioral changes in a security system is provided. The method includes the steps of providing a secured area having a plurality of security zones where access to each is controlled by an access controller, detecting entrances to at least some of the plurality of security zones by an authorized person through respective access controllers of the plurality of zones over a predetermined previous time period, forming a probability model of entry into each of the plurality of security zones from the detected entrances over the previous time period, detecting access requests for the authorized user from the access controllers during a current time period, and generating a security alert upon determining that an access request of the current access requests exceeds a probability threshold value associated with the probability model.