Ownership should be shared, but accountability must be explicit. GRC usually coordinates the campaign, asset owners validate access against business need, and managers help judge whether access still matches a person’s role. Security teams should ensure evidence, auditability, and revocation workflow are complete. Without clear responsibility, reviews stall or become purely administrative.
Who owns access reviews when multiple roles are involved?
Shared responsibility is the right model, but it only works when one party is explicitly accountable for the process end to end. GRC should coordinate the campaign, define the schedule, evidence standards, and escalation path. Asset owners should confirm whether access is still justified for the application or data set. Managers should validate whether the entitlement still matches the person’s role and current duties. NHI Mgmt Group notes that only 5.7% of organisations have full visibility into service accounts, which shows how quickly review programs fail when ownership is vague rather than operationally enforced. For the broader governance pattern, the Ultimate Guide to NHIs — Regulatory and Audit Perspectives explains why auditability matters as much as the review itself.
In practice, review programs stall when everyone can comment but no one is required to close the loop.
How to split responsibility without losing accountability
The cleanest model is to separate decision input from process ownership. GRC owns the control design: scope, cadence, evidence retention, and exception handling. Asset owners own resource-level approval, because they understand what access is technically and operationally necessary. Managers own role validation, especially for user access tied to job function, team changes, or promotions. Security or IAM teams should run the workflow, record reviewer decisions, and trigger revocation when access is denied or left unconfirmed.
This division lines up with how access reviews are typically expected to work under NIST Cybersecurity Framework 2.0 and the control discipline in NIST SP 800-53 Rev 5 Security and Privacy Controls. The practical test is simple: if a reviewer does not have enough context to judge access, they should not be asked to approve it alone.
- GRC: owns policy, evidence, timelines, and escalation.
- Asset owners: confirm business need for the system, data, or entitlement.
- Managers: confirm the person’s current role and whether the access still fits.
- Security or IAM: enforce workflow completion and revoke access when decisions are negative.
For identity programs that also include service accounts or other non-human identities, the operational lesson is the same: lifecycle control must be explicit, and the NHI Lifecycle Management Guide is a useful reference for keeping review, rotation, and offboarding connected. These controls tend to break down when access is spread across legacy applications with no clear resource owner, because reviewers cannot validate entitlement against a single source of truth.
Where access review ownership gets messy in real environments
Tighter review governance often increases coordination overhead, requiring organisations to balance faster certification cycles against stronger accountability. That tradeoff is most visible in large enterprises, where matrix reporting, inherited entitlements, and shared platforms blur the line between who knows the business need and who can actually approve removal.
Current guidance suggests using a clear RACI, but there is no universal standard for who must be the final approver in every case. In some organisations, the manager is the approver for personnel access while the asset owner is the approver for privileged or application-specific entitlements. In others, GRC closes exceptions and only escalates unresolved items. The key is not the title of the approver, but whether the approver can make a defensible decision and whether the revocation path is automatic when access is not reaffirmed.
Review ownership also becomes ambiguous when the same entitlement is shared across teams, such as generic admin groups, delegated support accounts, or inherited SaaS roles. For those cases, Top 10 NHI Issues is useful context because it shows how quickly access sprawl undermines accountability. The practical rule is to assign one accountable process owner, then require business, technical, and managerial inputs only where each can genuinely judge the risk.
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, NIST SP 800-53 Rev 5 and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.AC-4 | Access permissions must be reviewed and adjusted to least privilege. |
| NIST SP 800-53 Rev 5 | AC-2 | Account management requires review, approval, and removal of inactive access. |
| NIST AI RMF | GOVERN | Governance requires clear accountability for human and machine access decisions. |
| OWASP Non-Human Identity Top 10 | NHI-03 | Review failures often lead to overprivileged identities and stale entitlements. |
| CSA MAESTRO | IAM-01 | Agentic and workload access needs explicit lifecycle governance and ownership. |
Define ownership for certifications and enforce timely revocation of unapproved access.
Related resources from NHI Mgmt Group
- Who should own microservices access governance when application, platform, and security teams all have a role?
- Who should own authorization policy when backend developers, IAM teams, and application owners all influence access rules?
- How should security teams run access reviews for non-human identities?
- When do NHI access reviews create more value than a one-time cleanup?
