EvidenceSheet
CSA CCM v4.1 · CEK - Cryptography, Encryption & Key Management

CEK-06 Encryption Change Cost Benefit Analysis

Changes to the systems used for cryptography, encryption and keys, and to the related policies and procedures, are managed and adopted only after their downstream effects are fully considered, including residual risk, cost and benefit.

Source: CSA CCM v4.1, CEK-06. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open CSA CCM v4.1 in the compliance library.

Version 4.1 adds 11 controls (among them API security, log sanitisation and a service bill of materials) and renumbers several domains. CSA accepts v4.0.x during its transition; if your STAR assessment is still on v4.0.1, check the numbering against it.

4
artefacts
0
held by a system
3
at each review
hard
to go live
Document repository
where the evidence lives
teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

none for this control

periodic reviewEvidence produced at each review

  • Completed impact assessments for sampled changes · Document repository
  • Approval records referencing the impact assessment · Document repository
  • Dependency analysis of systems affected by the change · Document repository

governing documentDocuments that govern the control

  • Impact assessment template for cryptographic changes covering residual risk, cost and benefit · Document repository

First move

No system holds this evidence for you: it is people and documents. Reminders and routing to the owner still save time. Put the document under version control with an owner and review date, and log each review as a record with reviewer and date.

Common gaps auditors find

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

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CEK-05 Encryption Change Management · CEK-07 Encryption Risk Management