NIST SP 800-171 Rev 3 covers 76.2% of ANSSI Guide d'hygiene informatique (42 mesures, v2.0)
32 of the 42 controls in ANSSI Guide d'hygiene informatique (42 mesures, v2.0) are already satisfied by evidence you collected for NIST SP 800-171 Rev 3. 10 are genuine gaps. Every claim below was judged against both control sets and then argued against; the ones that did not survive are published further down with the reason each failed.
This number is directional. It says how much of ANSSI Guide d'hygiene informatique (42 mesures, v2.0) your NIST SP 800-171 Rev 3 evidence satisfies. The reverse pair is a different number, often very different, because a security standard has enormous depth for access control and almost none for lawful basis or data subject rights.
64 candidate mappings were examined and 2 were removed. Signed off 2026-08-19, review level machine verified. Mappings were judged by Claude Code rather than read line by line by a practitioner. Every claim shows its reasoning so you can check it. Ask and a practitioner will review this pair.
Where the gaps are
Coverage is never evenly spread. A source standard usually satisfies one part of a target almost completely and barely touches another, and which part is which is the thing worth knowing before you plan the work.
Theme level, not control level, deliberately. The per-control list of what is evidenced and what is a gap is the report itself, so publishing it here would be publishing the thing being sold.
Claims that held
A sample. Each one names the control whose evidence does the work, the control it satisfies, and why.
Role-based training before access covers developer and security officer training.
Password management sets composition rules and verifies passwords against a blocked list.
Passwords must be stored using an approved salted hash, so they are not recoverable.
Multi-factor authentication required for privileged and non-privileged account access.
Least functionality restricts unnecessary functions, ports, protocols and services.
Configuration settings in the most restrictive mode with documented deviations is hardening.
Baseline configurations maintained and updated define the minimum estate-wide level.
Media use restricts or prohibits removable media and bans media without an owner.
Claims that did not hold
2 proposed mappings for this pair were rejected. They are kept in the graph rather than deleted, so what was thrown out is as inspectable as what survived. A crosswalk that never rejects anything is not being judged.
Refuted in review.
Claimed at high confidence before it was rejected.
Refuted in review.
Claimed at high confidence before it was rejected.
The full report
Everything above is a sample. The report is every evidenced control and every gap, with the reasoning and the source document behind each one, in a form you can hand to an assessor. $299, emailed immediately.
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