MS-3.3: Risk responses are reviewed periodically
Re-evaluate mitigations on a fixed cadence.
Last reviewed October 2026
Why MS-3.3 evidence is hard
Mitigations decay. A response that was adequate in March gets reviewed in September against a system that has changed since, and this control is about the cadence of that review. The scan supplies trigger material: a finding marked fixed that turns up again is reopened under its original identity with the reason recorded, which is a sharper prompt than a calendar reminder. The cadence itself is set and minuted by you.
How Penaxtra maps to MS-3.3
NIST AI 600-1 asks what you measured and what you did about it. The MS-3.3 identifier rides the finding into the evidence export, and the append-only audit log carries the other half: which scans ran, against which assets, on what schedule. Every finding carries the probe that was sent, a SHA-256 digest of the response it provoked, the tier that decided the verdict and its status history from first observation to close. Identity survives a re-scan: a control you closed and that comes back reopens under the same row with a reopen count, rather than arriving as a new issue.
MS-3.3 capabilities
Findings tagged with the NIST AI 600-1 MS-3.3 identifier
Penaxtra severity for this control (medium)
Cross-framework identifiers attached to the same finding where controls overlap
PDF and JSON evidence export with the control identifier attached
MS-3.3 control coverage
Findings for MS-3.3 carry the NIST AI 600-1 MS-3.3 identifier along with the corresponding control identifiers in the other frameworks Penaxtra maps, so one result is reflected across each mapped framework.
Frequently asked
What is MS-3.3 (Risk responses are reviewed periodically)?
Re-evaluate mitigations on a fixed cadence. It is a NIST AI 600-1 control; Penaxtra assesses it at medium severity.
How does Penaxtra test for MS-3.3?
NIST AI 600-1 asks what you measured and what you did about it. The MS-3.3 identifier rides the finding into the evidence export, and the append-only audit log carries the other half: which scans ran, against which assets, on what schedule. Every finding carries the probe that was sent, a SHA-256 digest of the response it provoked, the tier that decided the verdict and its status history from first observation to close. Identity survives a re-scan: a control you closed and that comes back reopens under the same row with a reopen count, rather than arriving as a new issue.
Does a finding for MS-3.3 help with an audit?
Each finding is tagged with the NIST AI 600-1 MS-3.3 identifier and exported in the PDF and JSON evidence pack, so it appears on the auditor control list with the identifier already attached.