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NISTIR 7298 Revision 1, Glossary of Key Information Security Terms

NISTIR 7298 Revision 1, Glossary of Key Information Security Terms

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NIST IR <strong>7298</strong> <strong>Revision</strong> 1, <strong>Glossary</strong> <strong>of</strong> <strong>Key</strong> <strong>Information</strong> <strong>Security</strong> <strong>Terms</strong><br />

Classified <strong>Information</strong> – <strong>Information</strong> that has been determined pursuant to Executive Order<br />

(E.O.) 13292 or any predecessor order to require protection against<br />

unauthorized disclosure and is marked to indicate its classified status<br />

when in documentary form.<br />

SOURCE: SP 800-60; E.O. 13292<br />

See classified national security information.<br />

SOURCE: CNSSI-4009<br />

<strong>Information</strong> that has been determined: (i) pursuant to Executive<br />

Order 12958 as amended by Executive Order 13292, or any<br />

predecessor Order, to be classified national security information;<br />

or (ii) pursuant to the Atomic Energy Act <strong>of</strong> 1954, as amended, to<br />

be Restricted Data (RD).<br />

SOURCE: SP 800-53<br />

Classified <strong>Information</strong> Spillage – <strong>Security</strong> incident that occurs whenever classified data is spilled either<br />

onto an unclassified information system or to an information system<br />

with a lower level <strong>of</strong> classification.<br />

SOURCE: CNSSI-4009<br />

Classified National <strong>Security</strong><br />

<strong>Information</strong> –<br />

<strong>Information</strong> that has been determined pursuant to Executive Order<br />

13526 or any predecessor order to require protection against<br />

unauthorized disclosure and is marked to indicate its classified status<br />

when in documentary form.<br />

SOURCE: CNSSI-4009<br />

Clear – To use s<strong>of</strong>tware or hardware products to overwrite storage space on<br />

the media with nonsensitive data. This process may include<br />

overwriting not only the logical storage location <strong>of</strong> a file(s) (e.g., file<br />

allocation table) but also may include all addressable locations. See<br />

comments on clear/purge convergence.<br />

SOURCE: SP 800-88<br />

Clear Text – <strong>Information</strong> that is not encrypted.<br />

SOURCE: SP 800-82<br />

Clearance – Formal certification <strong>of</strong> authorization to have access to classified<br />

information other than that protected in a special access program<br />

(including SCI). Clearances are <strong>of</strong> three types: confidential, secret,<br />

and top secret. A top secret clearance permits access to top secret,<br />

secret, and confidential material; a secret clearance, to secret and<br />

confidential material; and a confidential clearance, to confidential<br />

material.<br />

SOURCE: CNSSI-4009<br />

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