BLACK definition in Computer Security terms:

Acronym(s): None

Definition(s): Designation applied to encrypted information and the information systems, the associated areas, circuits, components, and equipment processing that information. See also RED.
Note: Includes BLACK data.
Source(s): CNSSI 4009-2015 (CNSSI 4005)

Designation applied to information systems, and to associated areas, circuits, components, and equipment, in which national security information is encrypted or is not processed.
Source(s): CNSSI 4009-2015 (CNSSAM TEMPEST/01-13, Adapted from NSTISSI No. 7002)

Synonym(s): None


reference: CSRC Glossary