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GRC & Compliance·Updated 2026-10-21

Should I use ISO 27001 or the NIST Cybersecurity Framework?

Short answer

They serve different purposes and work well together. NIST CSF is free, voluntary guidance for organizing and improving a security program. ISO 27001 is a certifiable standard that proves to outsiders that you run a managed program. Many organizations use CSF to plan and ISO 27001 to certify.

The details

If no customer or regulator is asking for certification, CSF or the CIS Controls are a practical, low-cost starting point.

Terms explained

CIS Controls
The CIS Critical Security Controls are a prioritized set of security safeguards from the Center for Internet Security, grouped into Implementation Groups, with IG1 as a baseline for small organizations.
ISO/IEC 27001
ISO/IEC 27001 is the international standard for an information security management system (ISMS), against which organizations can be independently certified.
NIST Cybersecurity Framework
The NIST Cybersecurity Framework (CSF) 2.0 is voluntary guidance for managing cybersecurity risk, organized into six functions: Govern, Identify, Protect, Detect, Respond and Recover.

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