Ownership should sit with the control team closest to the process, but IT, finance, and audit must agree on one evidence model. The best practice is to make system logs, approvals, and certification results available from the source of control execution, not reconstructed later in spreadsheets. That improves auditability and reduces duplicate work.
Why This Matters for Security Teams
SOX evidence collection fails when ownership is treated as a paperwork task instead of a control-design problem. For identity controls, the evidence needs to come from the system that executed the approval, access review, or recertification, not from a later spreadsheet reconciliation. That distinction matters because auditors test whether the control operated consistently, while finance teams need traceability and IT needs operational accuracy. NIST’s Cybersecurity Framework 2.0 reinforces the need for defined governance and repeatable evidence, but the implementation detail is where many programs stumble.
NHI Management Group data shows why source-of-truth evidence matters: only 5.7% of organisations have full visibility into their service accounts, and 96% store secrets outside secrets managers in vulnerable locations including code, config files, and CI/CD tools, as covered in the Ultimate Guide to NHIs. If the underlying identity estate is fragmented, evidence collection becomes a retrospective exercise rather than a control output. In practice, many security teams only discover this after an audit sample cannot be tied back to a live system record, rather than through intentional control design.
How It Works in Practice
The practical answer is that the control owner should own the evidence model, while the system operator should provide the evidence directly from the point of execution. For SOX-related identity controls, that usually means IAM, PAM, or the application owner captures and preserves logs, approvals, ticket references, certification outcomes, and remediation timestamps in a way that is immutable or at least tamper-evident. Finance defines the testing need, audit defines the acceptable evidence attributes, and IT or security owns the control operation.
For identity evidence, current guidance suggests documenting three things:
Who approved the access or entitlement change, and in what system the approval occurred.
What was granted, reviewed, revoked, or recertified, with a stable identifier tied to the identity record.
When the control executed, including timestamps, exceptions, and any follow-up remediation.
This is where source-linked evidence outperforms reconstructed evidence. A recertification report exported from the IAM platform is stronger than a spreadsheet assembled after the fact, because it preserves the original control context. The same principle appears in NHI operations: the Top 10 NHI Issues research highlights how excess privilege, weak rotation, and poor visibility create governance gaps that are hard to prove after the fact. For SOX, that means evidence collection should be embedded into the workflow, not bolted on at quarter end. Best practice is evolving toward policy-as-code and system-generated attestations, but there is no universal standard for this yet.
Where this works best, the control owner maintains a short evidence checklist and the platform team automates export or retention. Where it breaks down is in hybrid environments with multiple identity stores, manual exception handling, or access reviews completed in email threads, because no single system can reliably reconstruct the control trail.
Common Variations and Edge Cases
Tighter evidence controls often increase operational overhead, requiring organisations to balance audit readiness against admin burden. That tradeoff becomes more visible when identity controls span HR-driven joiner-mover-leaver events, privileged access approvals, and application-specific access reviews. In those cases, ownership is usually split: the process owner owns the evidence standard, while each platform owner owns the source record. The important point is that every control needs one accountable owner, even if multiple teams contribute artifacts.
There is also a real distinction between continuous controls and periodic attestations. Continuous controls, such as automated deprovisioning or privileged session logging, should produce evidence on demand from the operating system or IAM tool. Periodic controls, such as quarterly recertifications, need a retained audit trail showing the population reviewed, the approver, exceptions granted, and remediation closure. This is especially important where SOX scopes include service accounts, API keys, or other NHI-related assets, because those identities often sit outside the manual access review process. The Ultimate Guide to NHIs - Standards is useful here for framing how identity governance, rotation, and evidence retention fit together.
The edge case to watch is when audit wants a single consolidated package but the control is actually distributed across tools. In that environment, the right answer is not one giant spreadsheet; it is a documented evidence model with system-generated inputs from each source of control execution.
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 |
|---|---|---|
| NIST CSF 2.0 | GV.OV | SOX evidence ownership depends on clear governance, oversight, and traceable control execution. |
| OWASP Non-Human Identity Top 10 | NHI-08 | Evidence for NHI access and lifecycle controls must come from authoritative systems, not spreadsheets. |
| NIST AI RMF | AI RMF governance principles map to accountable, auditable control ownership and documented evidence. |
Assign one accountable owner for each identity control and retain system-generated evidence from the source.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 24, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
