They often treat licence cleanup as a finance exercise instead of a security control. In reality, unused licences can indicate dormant or misassigned access, and stale entitlements can persist long after they stop being needed. License review should be paired with entitlement review so savings and security improve together.
Why This Matters for Security Teams
License optimisation becomes risky when teams only chase seat reductions and ignore what those seats unlock. A removed licence can leave behind a still-valid API key, service account, or delegated token, which means the access path survives the cost centre change. That is why NHI Management Group treats licence review as part of entitlement governance, not a procurement tidy-up. The problem is visible across modern estates, especially where non-human identities outnumber human identities by 25x to 50x, as noted in the Ultimate Guide to NHIs.
Security teams also underestimate how often access is “owned” by nobody. Unused SaaS seats, CI/CD service accounts, and shadow automation tokens can sit outside normal joiner-mover-leaver processes, so the organisation pays less for licences while keeping the same attack surface. The OWASP community’s OWASP Non-Human Identity Top 10 reflects this gap: identity hygiene has to include machine credentials, not just human accounts. In practice, many security teams discover entitlement drift only after a breach review, rather than through intentional licence governance.
How It Works in Practice
The correct model is to map licence state, entitlement state, and actual usage together. A licence tells you what the organisation is paying for, but not whether the associated identity still has valid privileges or active secrets. Current guidance suggests pairing software asset management with identity governance, privileged access review, and secret inventory so that a dormant subscription does not mask an active access path. For NHIs, the question is not only “is the licence needed?” but “what tokens, keys, certificates, or delegated grants were created under that licence?”
Practical review usually includes three checks:
- Confirm whether the account or integration has authenticated recently and against which systems.
- Validate whether the licence removal will automatically revoke linked entitlements, or whether manual offboarding is required.
- Review whether secrets are short-lived, rotated, and centrally managed, instead of embedded in code or pipelines.
This is especially important because the Ultimate Guide to NHIs — Key Challenges and Risks highlights how often secrets are stored in vulnerable locations and how frequently excessive privileges persist. That lines up with broader identity guidance in the OWASP Non-Human Identity Top 10, where exposure and privilege accumulation are treated as systemic control failures, not isolated hygiene issues. PCI environments add another layer: if a licence change affects a payment workflow, review access boundaries carefully against PCI DSS v4.0 requirements for strong access control and least privilege.
Most teams get the best results when finance, IAM, and app owners use one workflow for licence removal and another for entitlement closure, with evidence that both happened. These controls tend to break down when service accounts are shared across tools or when a single licence supports multiple automated workflows because ownership and downstream revocation become ambiguous.
Common Variations and Edge Cases
Tighter licence cleanup often increases operational overhead, requiring organisations to balance savings against business continuity and auditability. That tradeoff is real in environments where one application seat may indirectly support many automations, or where a vendor only exposes coarse licence tiers and no granular entitlement reporting. Best practice is evolving here: there is no universal standard for how licence data should be correlated to NHI lifecycle events, so teams often build policy rules around local risk rather than vendor labels.
One common edge case is a “freed” licence that remains tied to dormant credentials in another system. Another is a low-value seat that still carries high-risk permissions because it was provisioned for an integration years ago and never revisited. In those cases, the right response is not just deactivation; it is a full entitlement and secret review, followed by revocation, rotation, and ownership reassignment. The 52 NHI Breaches Analysis is useful context for how often stale machine access shows up in real incidents. In practice, the failure mode appears when teams measure licence utilisation without measuring who or what still has usable access behind the licence.
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 stale NHI secrets and lifecycle gaps tied to licence cleanup. |
| NIST CSF 2.0 | PR.AC-1 | Access control must follow entitlement changes, not just licence changes. |
| NIST AI RMF | Governance is needed where automated access decisions affect business and security risk. |
Define ownership and review steps for automation-led access so licence decisions do not bypass governance.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 11, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
