A.7.12 Cabling security
Cables that carry power, data or supporting information services are to be protected from interception, interference and damage. Purpose (stated in ISO/IEC 27002:2022): prevents loss, compromise or interruption of operations arising from power and communications cabling. As an Annex A reference control, it is compared with the controls determined in risk treatment (6.1.3 c) and recorded in the Statement of Applicability as included or excluded, with the justification and implementation status (6.1.3 d); implementation guidance is ISO/IEC 27002:2022 7.12.
Source: ISO/IEC 27001:2022, A.7.12. 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 ISO/IEC 27001:2022 in the compliance library.
Clauses 4 to 10 are the management-system requirements: none of them can be excluded when an organisation claims conformity. The 93 Annex A controls are a reference set: one may be excluded with a justification in the Statement of Applicability. Certification bodies assess conformity; the evidence lists here are what auditors commonly ask for, not a list the standard prescribes.
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
- Cable labelling at both ends matching the cabling records · Physical access / facilities
- Access control records for patch panels, risers and cable rooms · Vulnerability scanner / patch tooling
- For cables serving sensitive systems, records of physical checks and technical sweeps looking for devices attached without authorization · Physical access / facilities
governing documentDocuments that govern the control
- Statement of Applicability entry for control A.7.12, showing inclusion or justified exclusion, implementation status and the risks it treats · Policy repository / GRC workspace
- Cabling diagrams showing routes, protection (underground, conduit, protectors) and separation of power from data · Policy repository / GRC workspace
First move
Common gaps auditors find
- Patch panels sit in unlocked cupboards in public corridors
- Cables are unlabelled, so unauthorized connections cannot be spotted
- Power and data run together, causing interference
- Shared cabling with other tenants is not assessed
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.
Build my evidence sheet