They create more value when organisations have recurring credential sprawl, unclear ownership, or audit pressure. A one-time cleanup removes visible stale access, but campaigns create a repeatable control that can catch new drift as systems change. That matters most where service accounts and tokens are created continuously across cloud, SaaS, and CI/CD environments.
Why This Matters for Security Teams
NHI access reviews become more valuable than a one-time cleanup when the environment keeps generating new identities faster than manual remediation can keep up. That is common in cloud, SaaS, CI/CD, and data pipeline estates where service accounts, API keys, tokens, and certificates are created by automation rather than by a central identity team. A cleanup can reduce obvious risk, but it does not change the operating model that keeps producing drift. Current guidance suggests the question is less about whether stale access exists and more about whether the organisation can detect, verify, and remove it repeatedly as systems change. NHI Management Group research shows why this matters: only 5.7% of organisations have full visibility into their service accounts, and 91.6% of secrets remain valid five days after notification, which makes “fix it once” approaches fragile. See the Ultimate Guide to NHIs and the OWASP Non-Human Identity Top 10 for the governance and exposure patterns behind that drift. In practice, many security teams encounter repeated over-privilege only after a token leak, audit finding, or application outage has already exposed the gap.
How It Works in Practice
The value of an access review rises when it is treated as a recurring control tied to ownership, usage, and lifecycle evidence, not as a periodic spreadsheet exercise. A one-time cleanup answers “what is stale right now,” while a standing campaign answers “what has changed since the last review, who still needs it, and what can be removed safely.” That is especially important when identities are shared across pipelines or when secrets are duplicated across code, vaults, tickets, and configuration stores. The 2025 State of NHIs and Secrets in Cybersecurity reports that 62% of secrets are duplicated in multiple locations, which makes ownership checks and revocation tracking essential. The NHI Lifecycle Management Guide is the right reference for aligning reviews to creation, rotation, offboarding, and retirement.
- Use review cadences that match change velocity, such as every release cycle for CI/CD identities or every quarter for long-lived service accounts.
- Require a named owner, business purpose, and expiry date for each NHI so reviewers can judge necessity instead of guessing.
- Cross-check live entitlements against actual usage, because unused access is often the first signal of forgotten automation.
- Pair reviews with revocation workflows, so approval does not depend on a separate manual cleanup task that may never happen.
For audit-heavy environments, this becomes a compensating control that demonstrates continuous governance rather than a one-off remediation event. These controls tend to break down when identity sprawl is driven by decentralised engineering teams without a reliable inventory, because reviewers cannot validate ownership or safely distinguish temporary from production-critical access.
Common Variations and Edge Cases
Tighter review frequency often increases operational overhead, requiring organisations to balance risk reduction against engineering friction and alert fatigue. That tradeoff is real when a platform has thousands of short-lived workloads, especially if each deployment mints new credentials or rotates existing ones automatically. In those cases, current guidance suggests the best practice is evolving toward risk-based sampling, exception handling, and policy-driven automation rather than universal manual attestation for every identity. The 52 NHI Breaches Analysis is useful for seeing how excessive privileges and weak lifecycle control combine in real incidents, while the Top 10 NHI Issues helps distinguish structural problems from isolated cleanup opportunities. When third-party integrations, inherited SaaS permissions, or legacy batch jobs are involved, an access review may expose ownership gaps that cannot be solved by a single purge because the underlying system still depends on the access. External guidance from the OWASP Non-Human Identity Top 10 reinforces that this is a lifecycle and governance problem, not just a hygiene problem. The practical rule is simple: if new NHIs keep appearing, review campaigns create more value; if the environment is stable and tightly inventoried, a focused cleanup may be enough.
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 | Frequent review and rotation address stale NHI access and secret drift. |
| NIST CSF 2.0 | PR.AC-4 | Least-privilege access governance aligns with periodic NHI entitlement review. |
| NIST AI RMF | GOVERN | Continuous accountability matters when identities are created by automated systems. |
Run recurring NHI reviews and revoke unused access before it becomes persistent risk.
