Security teams should pair least privilege with strong identity governance, privileged access controls, and regular access review. The goal is to ensure users and systems only have access needed for current tasks, with approvals, logging, and revocation built into the process. Evidence of control matters as much as the control itself, especially for audit readiness and repeatable compliance.
Why This Matters for Security Teams
ISO 27001 Annex A.9 is not just about access approvals. It is about proving that identity controls are effective, repeatable, and backed by evidence. That matters because auditors look for more than policy language. They expect access to be tied to business need, reviewed on schedule, and removed when no longer justified. The same logic applies to service accounts, API keys, and automation identities, which often escape the discipline applied to human users.
In practice, teams that focus only on joiner-mover-leaver workflows miss the larger control gap: non-human identities can outlive projects, accumulate privilege, and remain active long after the original need has passed. NHIMG’s Ultimate Guide to NHIs notes that 97% of NHIs carry excessive privileges, while 71% are not rotated within recommended time frames. That creates a direct compliance and exposure problem under ISO/IEC 27001:2022 Information Security Management and related access governance requirements.
Security teams also need evidence that controls work in practice, not just in ticketing systems. Access reviews, privileged access workflows, and revocation records should all be tied to identity inventory and ownership. In practice, many security teams encounter access sprawl only after an audit request, a breach review, or a failed deprovisioning exercise rather than through intentional governance.
How It Works in Practice
Effective implementation starts with identity inventory. Security teams need a complete list of human and non-human identities, owners, roles, entitlements, and authentication methods. Without that baseline, access review becomes a paperwork exercise. Current guidance suggests treating service accounts, OAuth apps, CI/CD tokens, and machine users as first-class identities, not exceptions. The governance model should align with NIST Cybersecurity Framework 2.0 and the control intent in NIST SP 800-53 Rev 5 Security and Privacy Controls, especially around least privilege, access approval, and access revocation.
For humans, that usually means role-based access, joiner-mover-leaver workflows, and periodic access recertification. For non-human identities, the stronger pattern is lifecycle-based governance:
- Assign a business owner and technical owner to every identity.
- Issue access only for a defined purpose and time window.
- Use privileged access management for elevated sessions and admin functions.
- Rotate secrets on a defined schedule and revoke stale credentials automatically.
- Log entitlement changes, approval decisions, and revocation events for audit evidence.
NHIMG’s Regulatory and Audit Perspectives section is especially useful here because it frames governance as lifecycle control, not a one-time access grant. The practical test is simple: can the organisation prove who approved access, why it was needed, when it expires, and how it is removed? If not, the control is incomplete even if a ticket exists.
These controls tend to break down in fast-moving DevOps and SaaS environments because identities are created programmatically faster than ownership, review, and revocation can keep pace.
Common Variations and Edge Cases
Tighter access control often increases operational overhead, requiring organisations to balance auditability against developer speed and automation uptime. That tradeoff is especially visible when teams manage shared service accounts, third-party OAuth connections, or secrets embedded in pipelines. There is no universal standard for this yet, so best practice is evolving around risk-based segmentation rather than one rigid approval model.
Some environments need stronger controls than a routine access review. High-privilege admin accounts, production break-glass access, and externally exposed integrations should use shorter review cycles, stronger approval paths, and tighter logging. For NHI-heavy estates, the challenge is not just approving access but proving ongoing necessity. NHIMG’s Top 10 NHI Issues highlights how over-privilege and weak rotation compound each other, which means recertification alone is not enough if secrets never expire.
For broader governance context, ISO/IEC 27002:2022 Information Security Controls supports a control-based approach, but it does not prescribe how to engineer every workflow. In practice, security teams should map each identity class to a specific control pattern: role review for people, owner-attested lifecycle control for machines, and automated revocation for secrets. That approach is more defensible than relying on annual recertification alone, especially where identities are ephemeral or generated by automation.
Related resources from NHI Mgmt Group
- How should security teams prioritise identity governance when cloud, infrastructure, and application access are all changing at once?
- Who should be accountable for access governance when enterprises use a partner to implement identity controls?
- How should security teams evaluate SaaS access and license optimization in identity governance programmes?
- How should security teams evaluate large integration marketplaces for identity governance and access control?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on August 28, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
