What evidence does ISO 27001:2022 8.5 need?

Statement of Applicability entry for control A.8.5, showing inclusion or justified exclusion, implementation status and the risks it treats. An authentication standard linking required authentication strength to information classification and system criticality. MFA configuration and coverage reports for critical systems, remote access and privileged access, including conditional or risk-based rules

8.5 of ISO 27001:2022, stated here in our words and cited to that clause.

Does it map to the other framework?

Yes, to 1 criteria in the other framework, each with a confidence and a reason. A link is a topical overlap, not a legal equivalence.

ISO 27001:2022 8.5 evidence: Secure authentication

ISO 27001:2022 8.5: Secure authentication

ISO 27001:2022 8.5 covers Secure authentication. The held text names 5 evidence records for it, the first being Statement of Applicability entry for control A.8.5, showing inclusion or justified exclusion, implementation status and the risks it.... The common gap an assessor flags is MFA is enabled for some critical systems but legacy protocols allow bypass.

Secure authentication technologies and procedures are to be put in place, driven by the information access restrictions and the access control policy. Purpose (stated in ISO/IEC 27002:2022): ensures users and entities are securely authenticated when granted access to systems, applications and services. 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 8.5.

What evidence supports 8.5?

Annex A technological controlStatement of Applicability entry for control A.8.5, showing inclusion or justified exclusion, implementation status and the risks it treats
Annex A technological controlAn authentication standard linking required authentication strength to information classification and system criticality
Annex A technological controlMFA configuration and coverage reports for critical systems, remote access and privileged access, including conditional or risk-based rules
Annex A technological controlLog-on configuration showing warning banners, generic error messages, lockout or throttling after failed attempts and masked password entry
Annex A technological controlAuthentication logs recording successful and failed attempts, with alerting on suspected brute force

Where this requirement comes from

This is our own statement of ISO 27001:2022 8.5, read from the copy we hold (licensed complete copy) and stated in our words, not the standard verbatim. The framework as we hold it.

Common gaps an assessor flags

MFA is enabled for some critical systems but legacy protocols allow bypass
Error messages reveal whether the username or the password was wrong
No lockout or rate limiting exists on internet-facing log-on pages
Biometric authentication has no fallback method

How it maps to SOC 2

CC6.1 high Secure authentication is the authentication component of logical access security.

A link is a topical overlap with a confidence and a reason. It does not establish that meeting one requirement satisfies the other, and it is not certification.