Because many non-human identities outlive the asset record that introduced them. A SaaS app can be retired, yet its service accounts, API keys, or OAuth grants may remain active. That leaves invisible access paths in place and makes inventory accuracy look better than security reality.
Why This Matters for Security Teams
IT asset inventories were designed to answer what is installed, owned, and supported, but non-human identities do not always end when the asset record ends. Service accounts, API keys, OAuth grants, and certificates can remain active after a SaaS app, container, or integration is retired, creating access paths that inventories do not surface. That gap matters because governance teams often rely on asset registers as a proxy for control coverage, even though the identity lifecycle is broader than the asset lifecycle.
NHIMG research on the Top 10 NHI Issues and the Regulatory and Audit Perspectives shows why this is not just an inventory problem: when the record is the control, anything outside that record becomes invisible. In practice, many security teams encounter orphaned NHI access only after a retired system is found still authenticating to production, rather than through intentional decommissioning reviews.
How It Works in Practice
The core issue is that asset inventories track objects, while NHIs represent authorities. An asset may be deleted, transferred, or decommissioned, but the associated credential or trust relationship can still function if nothing explicitly revokes it. That is why modern lifecycle guidance treats NHI creation, use, rotation, and retirement as separate control points, not as a side effect of asset management. The NHI Lifecycle Management Guide frames this as an identity hygiene problem, not a hardware or application disposal issue.
Effective governance requires joining several sources of truth:
- Configuration and CMDB data for the asset owner, purpose, and retirement date.
- Secret stores and IAM logs for active keys, tokens, certificates, and OAuth grants.
- Cloud and SaaS audit logs to confirm whether the identity is still authenticating.
- Ticketing or change records to prove who approved the grant and who revoked it.
The NIST Cybersecurity Framework 2.0 reinforces this broader control view by linking asset, access, and monitoring activities instead of treating them as separate silos. For non-human identities, this means inventory reconciliation must include evidence of active usage, not just record presence. Where organisations do this well, they discover that a “retired” system may still have automation jobs, webhook callbacks, or third-party API integrations depending on it. These controls tend to break down when cloud and SaaS ownership is fragmented across teams because no single inventory contains the full trust chain.
Common Variations and Edge Cases
Tighter inventory reconciliation often increases operational overhead, requiring organisations to balance visibility against administrative burden. That tradeoff is real, especially in environments with hundreds of short-lived workloads or heavily outsourced integrations. Current guidance suggests the most reliable approach is to inventory the NHI itself, then map it back to the asset, not the other way around.
There is no universal standard for this yet, but best practice is evolving around three edge cases. First, shared service accounts can be used by multiple assets, so retirement of one system does not imply revocation. Second, third-party OAuth connections may survive app removal if consent was granted outside the asset workflow, which is a common blind spot highlighted in The State of Non-Human Identity Security. Third, ephemeral workloads in CI/CD or containers can create identities that never appear in traditional asset records at all, yet still need strict expiry and revocation.
NHIMG’s 2024 ESG Report: Managing Non-Human Identities notes that 72% of organisations have experienced or suspect they have experienced a breach of non-human identities, which is a strong reminder that missing lifecycle visibility becomes an exposure issue quickly. The practical answer is to treat asset inventories as a starting point, then validate them against live identity telemetry and explicit offboarding controls.
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-01 | Inventory gaps often leave orphaned NHIs undiscovered and unmanaged. |
| NIST CSF 2.0 | ID.AM-01 | Asset management must extend to identities and their dependencies. |
| NIST AI RMF | Governance must account for lifecycle and accountability of autonomous identities. |
Define governance processes that tie each agent or automation identity to ownership and revocation.
Related resources from NHI Mgmt Group
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Reviewed and updated by the NHIMG editorial team on June 9, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
