Annex A 5.19
Information security in supplier relationships
Processes exist to manage the security risks of using supplier products and services.
What an assessor looks for
Show how suppliers enter the process, how they are tiered, and what assessment each tier receives. Tiering by spend rather than by data access is a common weakness worth pre-empting.
Where it usually fails
Low-cost suppliers holding highly sensitive data receive no assessment because the trigger is contract value.
Classification
- Theme
- A.5 Organisational
- Control type
- Preventive
- Security properties
- Confidentiality, Integrity, Availability
- Cybersecurity concepts
- Identify, Protect
- ISO 27001:2013 equivalent
- 15.1.1
Control number and title are identifiers used as references. The classification above is our own analysis, aligned to the shape of the ISO 27002 attribute model rather than reproduced from it, and no text from the standard appears on this page. Last reviewed 2026-08-03.
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