Benefits
The guidance gives four reasons to measure.
What the published 2016 guidance says
The guidance gives four reasons to measure. It fixes accountability, because a process or control that is missing, misapplied or ineffective becomes visible. It supports improvement, because progress can be quantified. It supplies evidence of conformity to the management system standard, to other standards and to law. And it informs decisions, by showing whether past and present security spending worked and where the next money should go. A measure that serves none of these is a report, not a control.
What it means in practice
Measurement earns its cost in four places: accountability, improvement, evidence and decisions. If a measure cannot be tied to one of those, it is a report, not a control. The test is whether a named decision changed because the number moved.
Status of this record. For 5.4, this page states the published 2016 guidance, not the DIS text. The DIS is at stage 40.60 and is not public. Check the published edition before you rely on the row.
What good looks like
For each measure, write the decision it informs and the person who makes it. Remove or redesign any measure that cannot answer the question. Report the four benefits with an example, not as a list of adjectives.
Evidence an assessor asks for
- GovernanceManagement review inputs that use measurement results to allocate resources or accept risk
- Performance evaluationAudit evidence packs that cite measurement results
The question an assessor will ask
An assessor will ask for management review inputs that use measurement results to allocate resources or accept risk. The test for 5.4 is whether that record can be produced for a live sample, not whether the guidance is described in a procedure.
Common gaps
- Measurement results produced for the auditor and never used in a decision
- No link between measured control performance and investment decisions
Before the next review
Before the next review, test this against one live record: measurement results produced for the auditor and never used in a decision.
What to check when the revision publishes
When DIS 27004 is published, compare the 5.4 Benefits record with this page. Ask whether the information need, the formula, the target, the frequency or the owner changes. Update the measure register and the kit, not the requirement, because the clause 9.1 duty stays as it is.