Dictionary · CNSSI-40
L2 — definitions grouped by regulatory framework.
1 sense under CNSSI-40
Nouns
1 sense- Clearance
Formal certification of authorization to have access to classified information other than that protected in a special access program (including SCI). Clearances are of three types: confidential, secret, and top secret. A top secret clearance permits access to top secret, secret, and confidential material; a secret clearance, to secret and confidential material; and a confidential clearance, to confidential material.