NIST CSF vs ISO 27001

Key Differences

ISO 27001 is a certifiable international standard published by ISO, requiring an IAF-accredited certification body to issue a formal certificate of conformance — typically after a Stage 1 documentation review and Stage 2 audit, recurring every three years with annual surveillance audits. It is required or preferred for organisations operating in the UK, EU, Middle East, and Asia Pacific.

NIST CSF is a US government-developed risk management framework that does not produce a third-party certificate; instead, organisations self-assess against Profiles and Tiers. It is the mandatory standard for US federal and defense sectors. NIST CSF 2.0 contains 106 subcategories across six Functions, while ISO 27001:2022 Annex A contains 93 controls across four themes.

Approximately 60% of NIST CSF subcategories map directly to ISO 27001 controls, making dual compliance achievable from a unified control set. Explore each framework: NIST CSF Compliance · ISO 27001 Compliance