Data Protection and Security

V

Access Control

V.IV

Multilevel Security

Air Gap Security

It uses completely separate network and computer hardware for different application classes.

Examples:

• Some hospitals have two LANs and two classes of PCs for accessing the patient database and the Internet.
• Some military intelligence analysts have several PCs on their desks to handle top secret, secret and unclassified information separately.

No communication cables are allowed between an air-gap security system and the rest of the world. Exchange of storage media has to be carefully controlled. Storage media have to be completely zeroised before they can be reused