Reviews stall when the owner leaves, changes roles, or simply does not respond. That creates incomplete certification, delayed remediation, and unowned access decisions that never close the loop. Manual handoffs also increase the chance that stale tasks and orphaned approvals remain open long after the identity state has changed.
Why This Matters for Security Teams
Manual access reviews look harmless until the identity owner is unavailable, the application has changed, or the approval trail is split across inboxes and ticket queues. At that point, certification becomes a coordination problem rather than a security control. For non-human identities, the stakes are higher because access is often tied to service uptime, automation, and third-party dependencies, not a single employee relationship. NHI Management Group notes that only 20% of organisations have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotation, which makes handoff gaps a recurring exposure point in practice. That is why governance guidance increasingly treats lifecycle ownership as a control, not just an administrative task, as reflected in the Ultimate Guide to NHIs and the OWASP Non-Human Identity Top 10. In practice, many teams discover the review process is broken only after stale approvals and orphaned access have already accumulated.
How It Works in Practice
Manual handoffs fail because access review depends on a human remembering context that the system does not enforce. When an owner changes roles, leaves, or delegates informally, the certification chain often loses the only person who can validate whether a secret, token, or service account is still needed. The result is delayed review cycles, incomplete remediation, and access that stays active because nobody is clearly accountable. The operational issue is not just missing paperwork. It is missing state transitions in the identity lifecycle, which is why NHI Lifecycle Management Guide is best read alongside standards-based governance such as the OWASP Non-Human Identity Top 10.
- Assign a named business and technical owner for every NHI, not a shared mailbox or generic team queue.
- Automate reassignment when ownership changes, including approvals, reminders, and escalation paths.
- Bind review cadence to identity state, such as last use, privilege changes, and offboarding events.
- Require evidence that a reviewer actually verified necessity, scope, and rotation status before certification closes.
Where possible, use lifecycle controls that remove the need for manual handoff entirely by integrating inventory, access review, and revocation into one workflow. Current guidance suggests this is most effective when paired with short-lived secrets and policy-driven approval logic, because static ownership records degrade faster than the identities they govern. These controls tend to break down in large federated environments because asset ownership is split across business units, vendors, and CI/CD systems that do not share a single source of truth.
Common Variations and Edge Cases
Tighter review controls often increase operational overhead, requiring organisations to balance faster remediation against the friction of more frequent reassignment and escalation. That tradeoff becomes more visible in environments with many ephemeral service accounts, outsourced operations, or inherited cloud subscriptions. Best practice is evolving, but current guidance suggests that manual handoffs should be treated as an exception path, not the default operating model, especially when the identity can be rotated or revoked automatically. NHI Management Group’s research also shows how persistent exposure compounds the issue: only 5.7% of organisations have full visibility into their service accounts, which makes owner-based review unreliable when the inventory itself is incomplete. The broader risk landscape is documented in the Ultimate Guide to NHIs — Key Challenges and Risks and the breach patterns in 52 NHI Breaches Analysis.
- Shared ownership is acceptable only when there is a clear backup reviewer with the same authority to approve or revoke.
- For third-party NHIs, handoff failures often reflect contract gaps as much as technical gaps, so vendor exit procedures matter.
- If review queues are too large to complete on time, the control should be redesigned rather than accepted as a paper exercise.
There is no universal standard for manual certification timing yet, but the practical benchmark is whether the process can close access changes before the identity state drifts. When it cannot, the control is already failing.
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 | Manual handoffs leave NHI ownership unclear, weakening access review accountability. |
| NIST CSF 2.0 | PR.AA-05 | Identity lifecycle and access review failures are governance and accountability gaps. |
| NIST AI RMF | Manual handoffs undermine accountable oversight of changing identity state. |
Establish human accountability and monitoring for access decisions that depend on changing context.
