Multi-level access reviews reveal the audit gap in IAM

At a glance

What this is: This is a vendor analysis of multi-level access reviews, with the key finding that access certification is still heavily manual in many organisations.

Why it matters: It matters because IAM teams need review processes that can scale across user, application, and entitlement sprawl without leaving remediation and audit evidence behind.

By the numbers:

• 36% of companies describe this process as being extremely manual.
• Only 20% have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotating them.
• Only 44% of organisations have implemented any policies to manage their AI agents, despite 92% agreeing that governing AI agents is critical to enterprise security.

👉 Read Zluri’s analysis of multi-level access reviews and audit simplification

Context

Access reviews are the governance checkpoint that confirms who should still have access, but they fail when entitlement data is fragmented, reviewer context is weak, and remediation depends on manual follow-through. In large IAM programmes, the problem is not the idea of certification but the operational drag that turns access review into a record-keeping exercise instead of a control.

For non-human identities, that weakness is amplified because service accounts, API keys, tokens, and workload credentials often outnumber human users and change faster than review cycles can keep up. Multi-level review can help, but only if the underlying entitlement inventory is accurate and the revocation path is actually automated.

For teams modernising IAM, this is less about adding more approvers and more about aligning certification with lifecycle action, audit evidence, and privilege scope. The question is whether access review is reducing standing access or simply documenting it after the fact.

Key questions

Q: How should IAM teams reduce manual work in access reviews without weakening control?

A: Automate the evidence collection, reviewer routing, and remediation handoff so people focus on decisions rather than administration. Multi-level review only reduces risk when it is linked to live identity data and enforced entitlement change. Otherwise, automation simply speeds up a manual process instead of improving governance.

Q: When does multi-level access review add value, and when does it become overhead?

A: It adds value when the access decision is genuinely ambiguous, privileged, or business critical, because extra reviewers can catch context that a single reviewer misses. It becomes overhead when every entitlement is escalated by default, because the programme gains delay without improving the quality of the final access decision.

Q: What breaks when access review outcomes are not tied to revocation?

A: The control breaks at the point where governance ends and enforcement should begin. Teams may have approvals, timestamps, and audit evidence, but the risky access remains active until someone manually closes the loop. That creates a false sense of compliance while exposure continues in production systems.

Q: Who is accountable when audit-ready access reports still leave standing access in place?

A: IAM and control owners remain accountable because a report is not the same as a revoked entitlement. Audit evidence shows that a review happened, but it does not prove that access was removed. Accountability sits with the team responsible for making review decisions operational, not just documentable.

Technical breakdown

How multi-level access reviews work in IAM programmes

Multi-level access review is a certification pattern where access decisions move through more than one reviewer tier before remediation is executed. The first reviewer usually knows the business context, while the second adds governance or technical scrutiny. In practice, the control only works when reviewer roles, entitlement data, and revocation workflows are tightly connected. If the review process ends in a spreadsheet or email trail, the organisation gains documentation but not control. That distinction matters because certification is supposed to reduce risk, not just prove that someone looked at it.

Practical implication: connect reviewer approval directly to revocation and change workflows so certification produces actual entitlement reduction.

Audit-ready access reports and evidence trails

Audit-ready reporting is more than exporting review results. It needs a defensible chain of evidence that shows who reviewed what, what context they used, what changed, and when those changes were enforced. In IAM terms, the evidentiary value comes from traceability across the certification campaign, not from a static report at the end. This becomes especially important where compliance teams need to prove that privileged access was reviewed, disputed access was escalated, and final decisions were applied consistently across systems.

Practical implication: preserve reviewer identity, decision history, and remediation timestamps in a form auditors can reconstruct without manual explanation.

Why manual remediation breaks access governance

Manual remediation creates the largest gap in access review programmes because the control stops being preventative once decisions leave the review screen. Every delay between approval, denial, and actual entitlement change extends the period in which access remains live even though the governance decision has already been made. That gap is particularly dangerous in environments with thousands of users and application entitlements, because the review outcome can be correct while the access state remains unchanged. The failure is not the review itself, but the lack of enforced closure between decision and enforcement.

Practical implication: measure time-to-remediation after each review cycle and treat long closure delays as a control failure.

NHI Mgmt Group analysis

Multi-level access review is a control against review fatigue, not a substitute for lifecycle governance. More approvers can improve decision quality, but they do not solve stale entitlements, missing offboarding, or delayed revocation. The discipline only works when it is tied to identity lifecycle controls and not treated as a standalone compliance ritual. Practitioners should judge it by how much access it actually removes, not by how many signatures it collects.

Manual access certification creates an audit illusion. Organisations can produce reports, timestamps, and reviewer notes while leaving the underlying access posture largely untouched. That means compliance evidence may improve even as standing access exposure remains unchanged. The programme risk is that audit readiness becomes decoupled from actual privilege reduction, so teams should look for proof of enforced remediation, not just completed campaigns.

Audit-ready reporting becomes useful only when it reflects real entitlement closure. A certification system that records decisions but does not trigger revocation is still an administrative workflow, not a governance control. This is where IAM teams should re-evaluate whether their access review process is measuring accountability or merely generating artifacts for inspection. The practical conclusion is that certification must be judged by state change, not paperwork.

Cross-functional review improves context, but context alone does not reduce risk. Department heads, IT owners, compliance staff, and security reviewers can each catch different errors, especially in complex entitlement models. Yet the governance outcome still depends on complete visibility and automated enforcement. The field lesson is that multi-level review is strongest when it shortens the path from decision to action, not when it adds extra delay.

Multi-level access reviews expose the audit gap between decision and enforcement. The article describes a common governance premise that access review completion equals access control completion. That assumption fails when revocation is manual, because the review has ended but the privilege still exists. The implication is that IAM programmes need to rethink whether certification is a control outcome or only a control record.

From our research:

• Only 20% have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotating them, according to Ultimate Guide to NHIs.
• 91.6% of secrets remain valid five days after the targeted organisation is notified, showing a critical gap in remediation procedures.
• For the lifecycle side of this problem, see NHI Lifecycle Management Guide for the offboarding and revocation patterns that certification workflows often fail to enforce.

What this signals

Access review maturity will increasingly be judged by closure speed, not campaign completion. The next governance gap is not whether teams can run certifications, but whether they can prove that denials and removals become live state changes quickly enough to matter. That is why access review should be treated as a lifecycle control, not a quarterly administrative event.

Review fatigue is turning into entitlement drift. As environments scale, certification programmes that rely on human follow-up will keep documenting access rather than shrinking it. Teams should expect auditors to focus more on enforcement evidence, especially where privileged and third-party access is still being reviewed manually.

With 97% of NHIs carrying excessive privileges in many environments, per the Ultimate Guide to NHIs, certification without automated closure leaves the hardest risk untouched. The operational signal to watch is whether review outputs are reducing standing privilege or simply producing better records of it.

For practitioners

• Bind certification to revocation workflows Route denial decisions and privilege reductions directly into identity and access enforcement systems so reviewers are not left creating tickets that age out before action is taken.
• Use multi-level review for disputed or high-risk access only Reserve second-level approvers for privileged, exception, or cross-functional access cases where the added context changes the decision, not for every routine entitlement.
• Measure review-to-remediation latency Track the time between access review completion and actual entitlement change, then treat slow closure as a governance defect rather than a reporting issue.
• Reconcile review scope against live entitlements Validate that the access population under review matches current user, application, and role data before each campaign begins, otherwise the campaign will certify stale records.

Key takeaways

• Multi-level access review improves decision quality, but it does not fix stale entitlements unless remediation is enforced.
• Manual certification can satisfy auditors while leaving access active, which creates a governance illusion rather than a security outcome.
• IAM teams should measure review-to-remediation latency and treat long closure times as a control failure.

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.
• Audit-ready report: A report that provides evidence of who reviewed access, what they decided, and what changed as a result. In mature IAM programmes, it should support reconstruction of the control process, not merely prove that a review campaign was completed.
• Remediation latency: The time between an access decision and the point at which the entitlement is actually changed or removed. Long remediation latency weakens certification because the risky state remains active after governance has already concluded.
• Standing access: Access that remains active without a current business need or fresh approval. In identity governance, standing access is risky because it survives longer than the justification that originally granted it, especially when review and enforcement are separated.

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.

This post draws on content published by Zluri: How to Simplify Audits with Multi-Level Access Reviews. Read the original.