Access Control: A means of ensuring that the resources of a data processing system can be accessed only by authorized entities in authorized ways. Access Control: A means of ensuring that the resources of a data processing system can be accessed only by authorized entities in authorized ways. Access Control: A means of ensuring that the resources of a data processing system can be accessed only by authorized entities in authorized ways. Access Control: A means of ensuring that the resources of a data processing system can be accessed only by authorized entities in authorized ways. Access Control: A means of ensuring that the resources of a data processing system can be accessed only by authorized entities in authorized ways. Access Control: A means of ensuring that the resources of a data processing system can be accessed only by authorized entities in authorized ways. Access Control: A means of ensuring that the resources of a data processing system can be accessed only by authorized entities in authorized ways.