Asset inventories show what exists, but they do not prove who can use it, how long access has existed, or whether the access is still justified. Risk remains when a retired app, device, or contract still has live credentials attached. That is why access lifecycle controls must run alongside asset lifecycle management.
Why This Matters for Security Teams
Asset inventories are necessary, but they are not an access-control system. They tell security teams what exists, yet they do not answer the harder questions: which non-human identities are attached, who approved them, whether the access is still needed, and whether credentials have outlived the asset itself. That gap is where dormant devices, retired applications, and forgotten service accounts turn into live exposure.
For NHI programs, the inventory problem is usually a lifecycle problem. A cloud workload can be decommissioned in the CMDB while its API key remains valid. A vendor contract can end while its token continues to authenticate. NHI Management Group has repeatedly highlighted lifecycle breakdowns in NHI Lifecycle Management Guide and the broader patterns behind Top 10 NHI Issues. Current guidance also aligns with OWASP Non-Human Identity Top 10, which treats unmanaged credentials as a distinct risk, not a bookkeeping error.
In practice, many security teams discover this only after a retired asset is still being used for authentication, rather than through intentional lifecycle review.
How It Works in Practice
Reducing access risk requires joining asset lifecycle management to identity lifecycle controls. The inventory should be the starting point for discovery, not the finish line. Each asset record needs a corresponding view of associated secrets, tokens, certificates, roles, and service principals so that teams can verify whether access is current, justified, and revocable. That is the operational difference between knowing an asset exists and knowing whether it can still be used to reach production systems.
A practical workflow usually looks like this:
- Map every asset to its dependent NHIs, including machine accounts, workload identities, and API keys.
- Compare asset status against credential status, especially for decommissioned systems, transferred ownership, and expired contracts.
- Apply expiration, rotation, and revocation rules to access artifacts separately from the asset record.
- Require evidence of approval for exceptions, then time-box those exceptions.
- Continuously reconcile inventory data against authentication logs and secret stores.
That model is consistent with the NIST view that governance depends on repeated identification, protection, and monitoring, not a one-time register, as reflected in the NIST Cybersecurity Framework 2.0. It also matches the threat pattern highlighted in LLMjacking: How Attackers Hijack AI Using Compromised NHIs, where exposed credentials can be abused within minutes once they are discovered.
Where teams need a concrete benchmark for secrets hygiene, the findings in The State of Secrets in AppSec show why this cannot be left to manual review alone. These controls tend to break down in highly federated environments because no single system owns both the asset record and the credential lifecycle.
Common Variations and Edge Cases
Tighter access control often increases operational overhead, requiring organisations to balance revocation speed against business continuity. That tradeoff is real when assets are shared across teams, when legacy systems cannot tolerate frequent credential rotation, or when third-party dependencies are embedded in critical workflows.
There is no universal standard for this yet, but current guidance suggests treating some asset classes differently. Ephemeral workloads may justify short-lived credentials and automated revocation, while industrial, medical, or regulated environments may need staged retirement and compensating controls. In those cases, the inventory must track not only whether an asset exists, but whether its access path is exceptional, inherited, or externally managed.
Two edge cases deserve special attention. First, shadow IT assets can disappear from the inventory while their credentials remain active in a secrets manager or CI/CD pipeline. Second, shared service accounts may survive asset retirement because multiple applications depend on them, which makes simple deletion unsafe. NHI management is stronger when asset records, approval records, and revocation evidence are linked, not merely co-located in separate tools.
For deeper context on breach patterns and why stale access persists, NHI Management Group’s analysis of 52 NHI Breaches Analysis is a useful reference point. The lesson is straightforward: inventories reduce ambiguity, but only lifecycle enforcement reduces exposure.
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 | Addresses unmanaged NHIs and stale credentials left after asset retirement. |
| NIST CSF 2.0 | ID.AM-1 | Asset management must be tied to access risk, not treated as a standalone list. |
| NIST AI RMF | Lifecycle governance helps manage risk from dynamic, machine-driven access paths. |
Use governance processes that keep identity, approval, and monitoring aligned across the asset lifecycle.
Related resources from NHI Mgmt Group
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Reviewed and updated by the NHIMG editorial team on June 10, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
