They should do both, but access review should come first when unknown or over-privileged identities already exist. Rotation reduces exposure window, but review reduces entitlement sprawl and clarifies ownership. If a team rotates secrets without fixing who can use them, it preserves the same risk pattern with a fresher credential.
Why This Matters for Security Teams
Secret rotation and access review solve different problems, so the order matters. Rotation shortens the life of a credential, but it does not tell you whether the credential should exist, who depends on it, or whether it is already being reused across too many systems. Access review is the faster way to find entitlement sprawl, stale ownership, and unknown use cases that keep risk alive even after a refresh.
That distinction shows up repeatedly in NHI incidents. NHIMG research on the Guide to the Secret Sprawl Challenge and the 2025 State of NHIs and Secrets in Cybersecurity highlights how duplicated, overused, and exposed secrets often persist because identity ownership was never clarified first. The OWASP Non-Human Identity Top 10 also treats weak lifecycle and entitlement control as core NHI risks, not side issues. In practice, many security teams discover the need for access review only after a leaked token or stale service account has already been used to move laterally.
How It Works in Practice
A practical sequence starts with inventory and entitlement review, then moves to rotation for the secrets that still have a justified business or workload need. First, identify which NHIs, service accounts, tokens, and API keys are in use, who owns them, and which applications depend on them. Then remove redundant access, consolidate duplicated identities, and confirm that every remaining secret has a documented purpose.
Once ownership and usage are clear, rotation becomes more effective because it is applied to a smaller, cleaner set of credentials. This matters because short-lived credentials only reduce exposure if the underlying identity model is already trustworthy. If 60% of NHIs are overused, as reported in the 2025 State of NHIs and Secrets in Cybersecurity, rotation alone just refreshes the same shared access path. For deeper context, the NHI Lifecycle Management Guide and the Guide to NHI Rotation Challenges show why lifecycle discipline and rotation cadence need to be paired.
- Start with an access review of all NHIs, not just secrets labeled “high risk.”
- Map every secret to an owner, workload, and business purpose.
- Remove unused, duplicate, or orphaned identities before rotating anything.
- Rotate the remaining secrets on a cadence matched to exposure level and operational criticality.
- Revalidate access after rotation to confirm the credential still has a justified use.
The operational goal is to shrink the blast radius before renewing the credential set, not to preserve the same access model with a fresh token. This guidance tends to break down in highly distributed multi-cloud environments where secret ownership is unclear and service dependencies are undocumented, because review decisions cannot be made confidently without reliable inventory.
Common Variations and Edge Cases
Tighter access review often increases coordination overhead, requiring organisations to balance faster secret renewal against the time needed to resolve ownership and application dependency questions. That tradeoff is real, especially for legacy platforms, CI/CD pipelines, and vendor-managed integrations where rotating one secret can break multiple downstream jobs.
Current guidance suggests prioritising review first when there is uncertainty, but there is no universal standard for every environment. If a secret is known to be exposed, stolen, or embedded in code, immediate rotation may need to happen in parallel with review. For agentic or highly automated workloads, the same principle still applies: the identity must be understood before the secret is refreshed, because autonomous systems can reuse, chain, or multiply access in ways that human operators do not anticipate. The OWASP Non-Human Identity Top 10 and the Ultimate Guide to NHIs — Static vs Dynamic Secrets are useful for deciding when static credentials should be replaced by shorter-lived alternatives.
In environments with mature PAM, JIT provisioning, and enforced RBAC, rotation can be scheduled more aggressively because standing access is already constrained. In immature environments, access review remains the higher-value first step because it exposes where the risk actually sits. When teams skip that step, they often end up rotating credentials for identities that should have been removed months earlier.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST CSF 2.0 and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Covers secret rotation and lifecycle weaknesses directly tied to this question. |
| NIST CSF 2.0 | PR.AC-4 | Least-privilege access review is the right first control when entitlements are unknown. |
| NIST AI RMF | AI RMF supports governance decisions for autonomous or automated identity use cases. |
Apply AI RMF governance to assign ownership and decision rights before changing secret controls.
