Accountability should sit with the business system owner, the identity team, and the platform operator together. NHI sprawl crosses application, cloud, and directory boundaries, so no single team sees the full picture. Clear ownership is the only way to make access review, secret rotation, and removal decisions enforceable.
Why This Matters for Security Teams
Accountability for NHI sprawl is not a reporting preference; it is what determines whether excess service accounts, API keys, and automation tokens are actually removed, rotated, or scoped down. When ownership is unclear, orphaned identities accumulate across SaaS, cloud, CI/CD, and data platforms, and no team can prove who approved them. NHI Management Group notes that only 5.7% of organisations have full visibility into their service accounts in the Ultimate Guide to NHIs, which is why sprawl is usually discovered during incidents rather than governance reviews.
This is also a Zero Trust problem. NIST’s Cybersecurity Framework 2.0 expects clear governance, asset visibility, and risk ownership, but NHI sprawl breaks those assumptions when ownership is split between application teams, platform operators, and identity administrators. In practice, many security teams encounter overprivileged or abandoned NHIs only after a credential leak, a failed audit, or an offboarding miss has already created exposure.
How It Works in Practice
The practical answer is shared accountability with a named primary owner. The business system owner should own the use case and business risk, the identity team should own policy, lifecycle, and control design, and the platform operator should own implementation in the cloud, directory, or automation layer. That division matches how NHIs behave in real environments: they are created by one team, used by another, and often deployed by pipelines or integrations that no one revisits after launch. The governance model has to reflect that lifecycle.
A workable operating model usually includes:
- an inventory of all NHIs tied to a business service, not just to a technical account list;
- explicit owner fields for each NHI, including a backup approver for rotation and offboarding;
- policy checks for secret age, privilege scope, and last use before approval;
- regular access reviews that force the system owner to justify continued need;
- automated revocation paths for dormant, duplicated, or unmanaged identities.
That model is consistent with the broader guidance in the Ultimate Guide to NHIs and the incident patterns described in the 52 NHI Breaches Analysis, where exposure often persists because no owner is empowered to act. Implementation should also align to NIST CSF 2.0 governance and control mapping, especially where identity data, asset ownership, and remediation responsibilities cross teams. These controls tend to break down in highly federated environments with shared cloud tenants and unmanaged third-party integrations because ownership metadata becomes stale faster than the identities themselves.
Common Variations and Edge Cases
Tighter ownership increases administrative overhead, so organisations have to balance governance quality against the friction of keeping metadata current. That tradeoff becomes visible in platform teams that automate account creation at scale or in M&A environments where NHIs inherit multiple legacy owners. Best practice is evolving here, and there is no universal standard for whether ownership should sit primarily in IT, security, or the product organisation; the more important rule is that every NHI must have one accountable business owner and one operational custodian.
There are also edge cases. Shared service accounts, vendor-managed integrations, and ephemeral build identities can blur responsibility unless the contract, pipeline, or workload registry names the accountable party. For third-party exposure, the operating assumption should be that the external partner owns safe use while the internal system owner owns acceptance of that risk. If the identity team owns everything, remediation becomes a queue; if the platform team owns everything, business context is lost. The control objective is to make Top 10 NHI Issues visible before they become exceptions that survive review by default.
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 and CSA MAESTRO address the attack and risk surface, while NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Ownership gaps are a core driver of NHI sprawl and orphaned identities. |
| NIST CSF 2.0 | GV.OV-01 | Governance oversight is required to define who owns NHI risk and remediation. |
| CSA MAESTRO | GOV-2 | Agent and workload governance needs explicit accountability across owners and operators. |
Assign each NHI a business owner and enforce lifecycle accountability before provisioning or renewal.
Related resources from NHI Mgmt Group
- How should IAM teams respond when Office 365 identity sprawl spans human and non-human access?
- How should security teams evaluate identity platforms that cover both human and non-human identities?
- Why do certifications matter for non-human identity governance?
- Who should own non-human identity lifecycle decisions in the enterprise?
