Compartmented Security Mode
- The mode of operation which allows the system to process two or more types of compartmented information (information requiring a special authorization) or any one type of compartmented information with other than compartmented information. In this mode, all system users need not be cleared for all types of compartmented information processed, but must be fully cleared for at least Top Secret information for unescorted access to the computer. (CSC-STD-003-85;)
- The mode of operation that allows the system to process two or more types of compartmented information or any one type of compartmented information with non-compartmented information. In this mode, all system users need not be cleared for all types of compartmented information processed, but must be fully cleared for at least the highest level of information for unescorted access to the computer and peripherals. (NCSC-WA-001-85;)
- Utilization of a resource-sharing computer system for the concurrent processing and storage of: a) two or more types of SCI; or b) one type of SCI with other than SCI. For DON purposes, the compartmented mode should be considered equivalent to multilevel mode. (OPNAVINST 5239. 1A;)