Because auditors need a consistent story about who or what had access, why it had it, and when that access changed. If human access has documented review and transfer logic but service accounts do not, the programme cannot show lifecycle consistency. That inconsistency is especially risky when credentials persist across ownership or workload changes.
Why This Matters for Security Teams
IAM compliance gets harder when human accounts and service account follow different governance paths because auditors are not only checking access levels, they are checking whether the organisation can explain ownership, review cadence, approval history, and deprovisioning logic in a consistent way. When one population has strong lifecycle controls and the other is treated as an exception, the control narrative breaks down.
This is not just a documentation issue. Non-human accounts often carry higher operational privilege, persist longer than the workload they were created for, and move with little visibility across teams and platforms. NHI Management Group’s Ultimate Guide to NHIs - Regulatory and Audit Perspectives frames that as a lifecycle accountability problem, not a naming problem. The risk becomes more obvious when organisations compare their human review process against the weaker handling of secrets and service identities.
The scale of the gap is visible in industry research: the 2024 Non-Human Identity Security Report found that 88.5% of organisations say their non-human IAM practices lag behind or only match their human IAM efforts, which means consistency is still the exception rather than the norm. In practice, many security teams encounter this only after a workload changes owners or a stale secret is reused in production, rather than through intentional lifecycle design.
How It Works in Practice
The cleanest way to reduce this compliance gap is to govern human and service accounts through one identity lifecycle model, while allowing different control treatments where the risk truly differs. Current guidance suggests the question is not whether service accounts should copy human workflows exactly, but whether each identity can be traced from creation to approval to review to revocation with equal audit clarity.
For human accounts, that usually means joiner-mover-leaver workflows, periodic access certification, and well-defined approval chains. For service accounts, the same control intent should exist, but the implementation changes: creation should be tied to a workload or application owner, credentials should be scoped to a specific purpose, and decommissioning should be linked to the workload lifecycle rather than a person leaving the company. NHI governance also benefits from distinguishing between the identity, the credential, and the runtime workload that uses it.
Practitioners usually improve auditability by standardising these elements:
- Named owner and business purpose for every service account
- Documented issuance, rotation, and revocation dates for secrets
- Periodic review of non-human entitlements against actual workload need
- Escalation path when the workload or application changes ownership
- Linkage between service account records and change management evidence
This is where frameworks such as NIST Cybersecurity Framework 2.0 help anchor repeatable control ownership, while NHI-specific guidance from Ultimate Guide to NHIs - Lifecycle Processes for Managing NHIs reinforces that lifecycle evidence matters as much as access itself. These controls tend to break down when service accounts are created ad hoc inside DevOps pipelines because no single team can prove who approved them or when they should be retired.
Common Variations and Edge Cases
Tighter governance often increases operational overhead, requiring organisations to balance audit evidence against delivery speed, especially where automation teams rely on frequent credential changes and short release cycles. Best practice is evolving here, and there is no universal standard for whether service accounts should be reviewed on the same cadence as human accounts.
The most common edge case is a shared service account that supports multiple applications or environments. That arrangement can be defensible, but it weakens traceability unless ownership, scope, and rotation are rigorously separated. Another common exception is machine-to-machine access in hybrid or multi-cloud environments, where identity sprawl makes it hard to align each secret with a single human approver. The Top 10 NHI Issues research highlights how lifecycle inconsistency and secret sprawl often appear together, which is why compliance teams should look for both.
Regulated environments may also need to map these controls to external obligations such as the NIS2 Directive - official EU legal text, where evidence of governance, accountability, and operational resilience matters. The practical takeaway is simple: if service accounts are treated as temporary technical artefacts while human accounts are treated as governed identities, audit findings usually follow.
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 | Identity lifecycle gaps drive inconsistent NHI governance and audit evidence. |
| NIST CSF 2.0 | PR.AC-1 | Access governance must prove who had access and why across identity types. |
| NIST AI RMF | Consistent governance supports accountable use of autonomous or automated identities. |
Inventory each non-human identity, assign an owner, and enforce joiner-mover-leaver style lifecycle controls.
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
