Multi-level access reviews close the audit gap in recertification

At a glance

What this is: This is an analysis of sequential, multi-level access reviews and the finding that dual-party approval produces more defensible recertification decisions than single-reviewer or first-decision-wins models.

Why it matters: It matters because IAM teams need recertification controls that survive audit scrutiny, reduce rubber-stamping, and better govern high-risk access across human, NHI, and privilege-heavy environments.

By the numbers:

• Only 5.7% of organisations have full visibility into their service accounts.
• 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface.
• Only 20% have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotating them.

👉 Read Veza's explanation of multi-level access reviews for recertification

Context

Access recertification is a governance control, not a clerical exercise. In high-privilege or high-blast-radius environments, one reviewer often lacks enough context to judge whether access is still justified, whether the entitlement is still safe, or whether the review has become a rubber stamp. Multi-level review addresses that gap by separating business justification from security or ownership validation.

For identity programmes, the issue is broader than human access alone. The same review logic affects service accounts, privileged entitlements, delegated application ownership, and any access decision where the approver needs both operational context and risk context. In practice, that makes this a lifecycle control problem that sits squarely inside IAM, IGA, and PAM governance rather than a simple workflow feature.

The article’s starting position is typical for organisations that already recognise audit pressure and entitlement sprawl. The challenge is not whether reviews exist, but whether the review model actually changes the quality of the decision.

Key questions

Q: How should teams design access reviews for high-privilege entitlements?

A: Use separate reviewers with different context, such as a manager for business need and an owner for risk or entitlement scope. Sequence the decision so the second reviewer sees only what passes the first stage. That combination reduces rubber-stamping and produces a clearer audit trail for sensitive access.

Q: What breaks when access recertification is handled by one reviewer only?

A: Single-reviewer recertification often collapses business justification and risk validation into one judgment, which increases the chance of rubber-stamping. The reviewer may not know enough about role need, privilege sensitivity, or segregation-of-duties constraints to make a defensible decision, especially in high-volume campaigns.

Q: When does multi-level review add real value to IAM governance?

A: It adds the most value when access is privileged, sensitive, or subject to segregation-of-duties requirements. It is also useful when auditors expect evidence that distinct parties agreed before access remained in place. In low-risk access, the added workflow may not justify the overhead.

Q: Who should be accountable when an access review is completed but risky access remains?

A: Accountability sits with the identity governance owner, the business reviewer, and the control design that allowed high-volume certification to substitute for judgment. Frameworks such as the NIST Cybersecurity Framework and lifecycle governance models expect controls to reduce risk, not merely record activity.

Technical breakdown

Sequential review versus first-decision-wins access reviews

A sequential access review separates the decision into stages. In the model described by Veza, an L1 reviewer acts first, and only the rows that clear that stage reach L2. That is materially different from assigning the same line item to multiple reviewers at once, where the earliest response closes the task and later reviewers may never weigh in. Sequential gating creates a true dependency chain between decisions, which is why it is used when organisations want stronger evidence that approvals were considered rather than merely completed. The mechanism is governance sequencing, not just reviewer multiplication.

Practical implication: distinguish true dual control from parallel assignment before you assume a review process is defensible.

Why dual-party review reduces rubber-stamping

Rubber-stamping happens when the reviewer does not have enough context to make a reasoned decision and defaults to approval. Multi-level review reduces that pressure by splitting the workload and using different reviewer perspectives. A manager can validate job-based need, while an application or entitlement owner can validate resource fit, privilege scope, and risk. Because L2 only sees what passed L1, the final reviewer can focus on the subset that actually deserves deeper scrutiny. That is a control design choice aimed at decision quality, not just operational convenience.

Practical implication: use role-differentiated reviewer assignment where context and risk assessment come from different parts of the organisation.

Decision modes shape audit evidence and control strength

The configured decision mode determines how the review resolves. Unanimous approval requires both levels to agree, unanimous rejection requires consensus to deny, and last decision gives the final reviewer override authority. Those choices matter because they change both the control strength and the evidence trail. In a compliance-heavy workflow, the strongest audit story usually comes from unanimous approval or clearly bounded dual control. In a lower-friction workflow, last decision may be acceptable, but it reduces the practical value of the earlier review stage if the final approver can overrule it without constraint.

Practical implication: align the decision mode with the risk of the entitlement, not with reviewer convenience.

NHI Mgmt Group analysis

Multi-level access review is an audit-control pattern, not a substitute for entitlement hygiene. Sequential approval improves decision defensibility, but it does not fix the underlying problem of over-entitled access. If the underlying entitlement graph is already inflated, a better review process can still end in a better documented bad decision. Practitioners should treat dual control as a governance layer on top of entitlement cleanup, not as a replacement for it.

Access review quality depends on separating context, not multiplying approvers. The real value in multi-level review is that L1 and L2 contribute different facts to the same decision. That matters in IAM because one reviewer often understands business need while another understands privilege risk, segregation-of-duties pressure, or application sensitivity. The practitioner conclusion is straightforward: if every reviewer sees the same thing, you do not have stronger governance, only more workflow.

High-risk recertification needs a named concept: review depth. Review depth is the amount of independent context brought to an access decision before approval becomes final. In high-blast-radius environments, shallow review creates compliance theatre because the same person, same perspective, or same task path resolves every row too quickly. The implication is that governance teams should design for depth where privilege, sensitivity, or auditor scrutiny is highest.

Two-stage review can improve accountability only if ownership boundaries are real. The model works when the manager, owner, or steward can be held responsible for different parts of the decision. If ownership is vague, auto-assigned, or politically detached from actual access risk, the sequence still completes but the accountability signal weakens. Practitioners should therefore treat reviewer mapping as a governance design problem, not a routing convenience.

Lifecycle controls become more credible when approval and revocation are tied to locked decisions. The most useful access review workflows are the ones that produce a clear, auditable transition from decision to action. That is where certification, revocation, and reporting belong together. The field should stop thinking of recertification as a periodic checklist and start treating it as an accountable entitlement lifecycle checkpoint.

From our research:

• Only 5.7% of organisations have full visibility into their service accounts, according to Ultimate Guide to NHIs.
• Only 97% of NHIs carry excessive privileges, according to Ultimate Guide to NHIs , Key Challenges and Risks.
• NHI Lifecycle Management Guide is the next step when you need provisioning, rotation, and offboarding controls that align with review outcomes.

What this signals

Review depth will become a more visible governance metric as enterprises try to prove that access recertification is more than a checkbox. In environments where visibility is already weak, the organisation that cannot distinguish approval quality from approval volume will continue to miss over-entitled access even when review campaigns technically complete. With only 5.7% of organisations reporting full visibility into service accounts, the operational lesson is that governance evidence must be stronger than the entitlement data it is trying to certify.

As IAM and IGA programmes mature, teams will need to treat reviewer separation, decision mode, and revocation linkage as first-class design choices rather than configuration details. That shifts the conversation from campaign completion to control fidelity, which is where auditors and security leaders increasingly focus. The practical next step is to connect recertification design to broader identity lifecycle management using the NHI Lifecycle Management Guide and related governance controls.

Multi-level review also exposes a broader control boundary: if access decisions are not backed by accurate ownership, they can still be approved for the wrong reasons. The governance signal for practitioners is to validate who can speak for business need, who can speak for privilege risk, and whether those roles are genuinely independent. When those boundaries blur, review depth disappears even if the workflow remains formally intact.

For practitioners

• Separate contextual approval roles Assign L1 to the manager or immediate business validator and L2 to the application, entitlement, or data owner so each reviewer brings distinct evidence to the decision.
• Use true sequential gating for high-risk entitlements Configure the workflow so L2 only receives rows that pass L1, and ensure rejection at the first stage stops the review before unnecessary downstream effort begins.
• Match decision mode to access risk Use unanimous approval for highly privileged or sensitive access, and reserve last decision only for cases where policy explicitly allows final approver override.
• Prove accountability in the audit trail Retain evidence of who reviewed, what they saw, and when each level approved or rejected the line item so auditors can reconstruct the control path.
• Link recertification to revocation workflows Trigger access removal or ticketing only when the decision is locked in, and verify that the action is recorded against the final review outcome.

Key takeaways

• Multi-level access review strengthens governance only when it creates genuinely independent judgment across stages.
• Sequential review improves audit defensibility, but it does not compensate for excessive privilege or weak entitlement ownership.
• The most useful recertification controls tie reviewer accountability to locked decisions, revocation actions, and an auditable evidence trail.

Key terms

• Multi-level access review: A certification process that sends access decisions through more than one reviewer before action is taken. It is used to add governance context in complex environments, but it only improves control if the final decision is enforced in live systems rather than archived in a report.
• Review Depth: Review depth is the amount of independent context brought to an access decision before it becomes final. In practice, deeper review means different stakeholders validate different aspects of the entitlement, such as business need, privilege risk, and operational ownership, rather than repeating the same judgment.
• First Decision Wins: First decision wins is a parallel review pattern where any assigned reviewer can complete the line item and close the task. It can be convenient when multiple people are equally authorised, but it does not create true dual control because later reviewers may never influence the outcome.
• Rubber Stamping: A review pattern where approvers accept most entitlements with little real evaluation. It usually appears when decision context is weak, entitlement volume is high, and the perceived cost of removal is higher than the cost of approval. The control fails because the process rewards completion, not judgment.

What's in the full article

Veza's full article covers the operational detail this post intentionally leaves for the source:

• The exact L1 and L2 reviewer assignment patterns for managers, application owners, and first-level reviewer managers.
• The configured decision modes that change how approvals, rejections, and last-decision authority behave in practice.
• The reporting outputs that document every review step for audit evidence and compliance review.
• The automation triggers that fire revocation or ticketing actions once the decision is locked in.

👉 Veza's full article covers sequential review design, decision modes, and audit reporting details.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity lifecycle are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are responsible for identity security strategy or NHI governance in your organisation, it is worth exploring.