Accountability sits with the identity governance owner, the system owner, and the business reviewer together. If the platform lacks reliable lifecycle context or risk signals, the review process becomes a compliance exercise rather than a control. Frameworks such as the NIST Cybersecurity Framework 2.0 help anchor that responsibility.
Why This Matters for Security Teams
identity certification campaigns are supposed to catch stale, excessive, or mis-scoped access before it becomes an incident. When risky access is missed, the issue is rarely a single reviewer mistake. It usually reflects broken ownership, weak lifecycle context, or a review design that cannot distinguish normal entitlement from dangerous privilege. NHI Management Group’s Ultimate Guide to NHIs shows why this matters: 97% of NHIs carry excessive privileges, and 80% of identity breaches involved compromised non-human identities such as service accounts and API keys.
That is why accountability cannot sit with one person alone. The identity governance owner is responsible for the review program, the system owner is responsible for knowing what access is actually required, and the business reviewer is responsible for validating whether access still matches the operational need. The NIST Cybersecurity Framework 2.0 helps anchor that shared responsibility through governance and access control outcomes.
In practice, many security teams discover missing risky access only after a service account has already been over-privileged for months, rather than through an effective certification control.
How It Works in Practice
Effective certification is not just a spreadsheet review. It depends on whether the review platform can surface the right context at the right time: asset ownership, application criticality, last-use signals, privilege level, and whether the identity is human or non-human. For NHIs, this is especially important because service accounts, API keys, and automation identities often have no obvious user to approve on their behalf. The OWASP Non-Human Identity Top 10 highlights why over-privilege and weak lifecycle control remain common failure modes.
A practical operating model usually includes:
- clear business ownership for each identity and entitlement set
- review rules that flag privileged, dormant, or externally exposed access first
- lifecycle data from CMDB, IAM, PAM, or secrets management tools
- escalation paths when the reviewer cannot validate the access decision
- evidence that remediation actually happened, not just that the review was completed
Current guidance suggests that certification should be a risk decision, not a box-ticking exercise. NHI-specific evidence from the 52 NHI Breaches Analysis reinforces the point that missed access reviews often correlate with missing ownership and incomplete inventory, not merely inattentive approvers. When the business reviewer lacks operational context, the identity governance owner must either enrich the review packet or reject the certification cycle as incomplete.
These controls tend to break down in environments with shared service accounts, fragmented secrets storage, or fast-moving CI/CD pipelines because the entitlement owner cannot reliably confirm who is using the access and for what purpose.
Common Variations and Edge Cases
Tighter certification often increases review overhead, requiring organisations to balance better risk detection against reviewer fatigue and slower remediation. That tradeoff becomes more visible where hundreds of NHIs are created automatically, where access changes daily, or where legacy applications have no clean entitlement mapping. Best practice is evolving, but there is no universal standard for how much runtime context must be attached to each review.
One important edge case is delegated administration. If a platform team manages the system but the business owns the data, accountability is shared and must be documented explicitly. Another is emergency access: a reviewer may accept temporary elevated access, but that approval should be time-bound and re-certified after the incident or maintenance window closes. For organisations building stronger governance, the Top 10 NHI Issues and NIST’s governance-oriented access control outcomes provide a useful reference point, but they do not replace local ownership rules.
Where certification fails most often is in systems that treat human and non-human access the same way. In those environments, the accountable parties are still the governance owner, system owner, and business reviewer, but each must be measured on whether they produced a defensible decision, not just whether they clicked approve.
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-01 | Governance outcomes define shared accountability for access review failures. |
| OWASP Non-Human Identity Top 10 | NHI-03 | Excessive or stale NHI access is a core risk missed by certification campaigns. |
| NIST AI RMF | AI governance principles map to accountable, traceable decisions in access review workflows. |
Assign explicit control ownership and verify certification decisions are tied to risk acceptance.
