US Patent 8661539 Intrusion threat detection

A system is disclosed that can be used to monitor for an attempted intrusion of an access system. The system detects an access system event in the access system and determines whether the access system event is of a type that is being monitored. If the access system event is of a type that is being monitored, the system reports information about the access system event. This information can be used by a rules engine or other process to determine if the access system event was part of an attempted intrusion of the access system.