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3.1.22OFFICIAL STATEMENT BELOWDERIVED REQUIREMENTPENDING NIST SME REVIEW

3.1.22Publicly accessible content control

3.1 Access Control · NIST SP 800-171 Rev. 2 · The heading label is this site's navigational shorthand; the official language is the statement below.

Official requirement statement (verbatim)

Control CUI posted or processed on publicly accessible systems.

NIST SP 800-171 Rev. 2 — Protecting CUI in Nonfederal SystemsNIST SP 800-171A — Assessing Security Requirements for CUI
Independent interpretation

What this requirement is after

Nothing controlled reaches your public website, social media, or marketing material. A small set of named people are authorized to post publicly, someone checks content for CUI before it goes out, and the already-public footprint gets swept periodically — because the photo of the shop floor with a drawing on the bench is how this actually fails.

Mapped practices

Brilliant at the Basics practices that support this requirement

Doing the work

Implementation considerations and evidence

Implementation considerationsIndependent guidance — tailor to your environment
  • Name the individuals authorized to publish publicly and give them the review step: content checked for CUI before posting, with the check recorded.
  • Sweep existing public content on a cadence — website, social accounts, published case studies — and record the sweep even when it finds nothing.
What operating evidence looks likeRecords worth retaining, not a submission checklist
  • The list of personnel authorized to post public content
  • Pre-publication review records and periodic sweep records with dates and outcomes
Artifacts

Templates and worksheets with a mapped relationship

No artifact in the library names this requirement yet. The library index groups everything by category and practice.

The other revision

Where this lands in Rev. 3

Provenance

Sources and review status

Primary sourcesNIST SP 800-171 Rev. 2 — Protecting CUI in Nonfederal Systems · NIST SP 800-171A — Assessing Security Requirements for CUI
Review statusPending NIST SME review
Content version1.0
Updated