APRA CPS 234 covers 8% of NIST SP 800-53 Rev 5
24 of the 300 controls in NIST SP 800-53 Rev 5 are already satisfied by evidence you collected for APRA CPS 234. 276 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.
What this leaves you to do
NIST SP 800-53 Rev 5 has 300 controls. Holding APRA CPS 234 already evidences 24 of them, so the work in front of you is 276 controls, not 300, which is 92% of the standard rather than all of it.
That is the whole claim. We do not know your hourly rate, how long a control takes you, or how many people you have, so there is no figure here in dollars or weeks. Every number in that sentence comes from the two counts above it and can be re-derived from the free tools without taking our word for any of it.
This number is directional. It says how much of NIST SP 800-53 Rev 5 your APRA CPS 234 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.
49 candidate mappings were examined and 0 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.
Control effectiveness must be assessed through a systematic programme with defined scope and frequency.
Assessors must be skilled specialists functionally independent of the activity being tested.
Internal audit must review design and operating effectiveness of information security controls.
Deficiencies that cannot be remediated in a timely way must be recorded and escalated.
Ongoing control effectiveness testing at a frequency reflecting change is continuous monitoring.
Response plans must be reviewed and tested annually to confirm they remain effective.
Plans must cover every incident stage from detection through to post incident review.
Robust mechanisms must detect incidents and respond to them in a timely way.
Claims that did not hold
Nothing proposed for this pair was rejected in review. That is unusual and worth knowing rather than hiding: it means the candidate set was small and every candidate held.
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.
Buy this crosswalk