Abstract: A system comprising a processor adapted to activate first and second security levels for the system. The system also comprises a plurality of exception handlers, each exception handler executed by the processor and associated with one of the security levels. A first exception handler associated with the first security level receives an exception and forwards the exception to a second exception handler associated with the second security level for service. The second exception handler either services the exception or forwards the exception to a third exception handler according to a security level of the exception.