Possession or Control

Possession or Control-

Possession or control refers to the physical disposition of the media on which the data is stored. This  enables us,  without involving other factors  such   as availability, to discuss our  loss  of the  data  in  its  physical  medium. In our lost shipment of backup tapes, let us say that some of them were encrypted and some of them were not. The  principle of possession would enable us to  more accurately describe the scope  of the incident; the encrypted tapes  in the lot  are a possession problem but  not  a confidentiality problem, and  the  unencrypted tapes  are a problem on both counts.