A system and method control or manage access to multiple target servers in a network. The system includes an access control user interface, a memory, and a management server. The access control user interface is accessible to the multiple target servers. The memory stores a database providing information to the access control user interface. The management server includes a processor implementing discovery and event trigger engines. The discovery engine discovers user rights stored at the multiple target servers and delivers the user rights over the network to the database. The event trigger engine is invoked by detection of a security event from a first target server, updates the user rights at a local cache on the first target server, and delivers the updated user rights to the database. The event trigger engine is configured to modify the discovery engine based on the detection of the security event.