a system comprising a processing logic adapted to activate multiple security levels for the system and a storage coupled to the processing logic via a bus , the bus adapted to transfer information between the storage and the processing logic . the system also comprises a monitoring logic coupled to the processing logic and comprising a range of addresses associated with a predetermined security level of the system . the monitoring logic obtains an address associated with the information . if a current security level matches the predetermined security level and if the address does not correspond to the range of addresses , the monitoring logic restricts usage of the system .