trustworthy regrading mechanism
163544·updated Aug 30, 2026A validated, policy-governed process or control that an organization is authorized to deploy when changing the security classification, labels, or other attributes assigned to information — particularly when data crosses between security domains or trust boundaries with differing policies. It is a trusted process authorized to re-classify and re-label data in accordance with a defined policy exception, and its distinguishing characteristic is that the reassignment action itself must be performed only through this controlled channel rather than through ad-hoc or manual means. Validated regrading mechanisms are used by organizations to provide the requisite levels of assurance for attribute reassignment activities. In practice, as seen in both NIST SP 800-53 (control AC-16(9)) and authority documents such as the DoD CMMC Assessment Guide and the Canadian Centre for Cyber Security guidance, enforcement of cross-domain information flow policy includes implementing trustworthy regrading mechanisms to reassign security attributes and security labels alongside hardware-enforced one-way flows and outright transfer prohibitions.
Source
, and implementing trustworthy regrading mechanisms to reassignthe sentence this term was read in
generalized from a web lookup of the quoted expression at proposal time Verdict: term of art.
- AC-16(9): Attribute Reassignment – Regrading Mechanisms - CSF Tools
- control_freak | Controls | AC-16(09) - Attribute Reassignment — Regrading Mechanisms
- Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations
A definition generalized from search results is a draft to react to, not provenance. Confirm it against an authority document before this term is verified.
A web lookup ran when this term was proposed
A validated, policy-governed control mechanism—technical, procedural, or architectural—used to reassign security and privacy attributes (such as classification labels) attached to information when that information moves across or between security domains with differing policies. It is a trusted process authorized to re-classify and re-label data in accordance with a defined policy exception. Organizations use validated regrading mechanisms to provide the requisite levels of assurance for attribute reassignment activities. In practice, implementing trustworthy regrading mechanisms to reassign security attributes and security labels is one of several enforcement options—alongside prohibiting transfers outright or using hardware-enforced one-way flows—applied at policy enforcement points where interconnected systems with different security policies exchange data.
Advisory only. A term this product ships is defined by an authority document, not by a search result.
Proposed during multiword review of this document in the CKI mapping queue.
Attested in
Classifications
Entity Type
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Information Class
Variants
- plural
- trustworthy regrading mechanisms
- possessive
- trustworthy regrading mechanism's
- pluralpossessive
- trustworthy regrading mechanisms'
Framework definitions
- §1 · attested_usage_reviewer_confirmed
- No definition is given in NIST SP 800-171r3. The term is attested in use at 1 citation in that document; a definition is pending curation.Increment 2: attested in 800-171r3 without a glossary definition.
- §1 · web_lookup_draft
- A validated, policy-governed process or control that an organization is authorized to deploy when changing the security classification, labels, or other attributes assigned to information — particularly when data crosses between security domains or trust boundaries with differing policies. It is a trusted process authorized to re-classify and re-label data in accordance with a defined policy exception, and its distinguishing characteristic is that the reassignment action itself must be performed only through this controlled channel rather than through ad-hoc or manual means. Validated regrading mechanisms are used by organizations to provide the requisite levels of assurance for attribute reassignment activities. In practice, as seen in both NIST SP 800-53 (control AC-16(9)) and authority documents such as the DoD CMMC Assessment Guide and the Canadian Centre for Cyber Security guidance, enforcement of cross-domain information flow policy includes implementing trustworthy regrading mechanisms to reassign security attributes and security labels alongside hardware-enforced one-way flows and outright transfer prohibitions.DR-088 backfill from the noun definition column
- §1 · web_lookup_draft
- A validated, policy-governed control mechanism—technical, procedural, or architectural—used to reassign security and privacy attributes (such as classification labels) attached to information when that information moves across or between security domains with differing policies. It is a trusted process authorized to re-classify and re-label data in accordance with a defined policy exception. Organizations use validated regrading mechanisms to provide the requisite levels of assurance for attribute reassignment activities. In practice, implementing trustworthy regrading mechanisms to reassign security attributes and security labels is one of several enforcement options—alongside prohibiting transfers outright or using hardware-enforced one-way flows—applied at policy enforcement points where interconnected systems with different security policies exchange data.Drafted by the propose-term web lookup (PD-018); a curator confirms or replaces it.