data confidentiality
1. (I) The property that data is not disclosed to system entities
unless they have been authorized to know the data. (See: Bell-
LaPadula model, classification, data confidentiality service,
secret. Compare: privacy.)
2. (D) "The property that information is not made available or
disclosed to unauthorized individuals, entities, or processes
[i.e., to any unauthorized system entity]." [I7498-2].
Deprecated Definition: The phrase "made available" might be
interpreted to mean that the data could be altered, and that would
confuse this term with the concept of "data integrity".