Annex A 8.21
Security of network services
Security mechanisms, service levels and requirements of network services are identified, implemented and monitored.
What an assessor looks for
Show what you require of network service providers and how delivery against it is monitored.
Where it usually fails
Network services are procured on availability terms alone with no security requirements stated.
Classification
- Theme
- A.8 Technological
- Control type
- Preventive
- Security properties
- Confidentiality, Integrity, Availability
- Cybersecurity concepts
- Protect
- ISO 27001:2013 equivalent
- 13.1.2
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.
Building the Statement of Applicability?
Record your applicability decision for this control and the other 92 in the browser-based builder. Nothing is transmitted, and you export the file at the end.
Open the SoA builder