TL;DR: Clarity Security argues that user access reviews remain a core Identity Governance and Administration control for reducing unauthorized access, improving accountability, and supporting compliance, while citing the 2017 Equifax breach as a reminder that failing to revoke access rights can create lasting exposure. Periodic review matters, but risk-based automation and privileged-account focus are what make the control operationally meaningful.
At a glance
What this is: This is a practitioner guide on user access reviews that frames them as a core identity governance control for limiting unauthorized access and maintaining compliance.
Why it matters: It matters because IAM and IGA teams still rely too heavily on periodic review without enough automation, risk prioritisation, or privileged-access focus.
👉 Read Clarity Security's analysis of why user access reviews still matter for IAM teams
Context
User access reviews are the recurring check that verifies whether a person still needs the access they have. In Identity Governance and Administration, that control matters because access decisions drift faster than most organisations can manually track.
Clarity Security's article argues that access review processes are not just an audit task. They are a governance control point for reducing data exposure, tightening accountability, and supporting regulatory obligations across user accounts, privileged accounts, and high-risk systems.
Key questions
Q: What breaks when user access reviews are not in place?
A: Privilege creep, orphaned access, and weak accountability are the first things to break. Without recurring reviews, users keep permissions they no longer need, former staff may retain active accounts, and machine identities can sit unnoticed with broad access. The result is avoidable exposure that often shows up only after an audit or incident.
Q: Why do periodic reviews reduce compliance risk but not eliminate it?
A: Periodic reviews help demonstrate governance, but they do not fix weak provisioning, poor revocation, or fragmented entitlement data on their own. If the review process is infrequent, manual, or disconnected from deprovisioning, access can remain in force long after the business need has disappeared.
Q: What do teams get wrong about access certification?
A: Teams often treat certification as proof that access is safe, when it is really only a decision process. The quality of the outcome depends on the context given to reviewers, including role, activity, and ownership. Without that context, approvals can simply preserve inherited access and outdated entitlements.
Q: How should security teams scope access reviews so reviewers focus on the highest-risk access first?
A: Start from the control objective, not from the full inventory of available accounts. Scope the campaign to the specific population, applications, roles, or entitlements that answer that objective. Prioritise privileged access, sensitive business systems, inactive users, or contractor access when those are the real governance risks. This reduces reviewer fatigue, improves decision quality, and produces cleaner audit evidence.
Technical breakdown
How user access reviews support identity governance
User access reviews, often called access certifications, are the periodic process of validating whether users still need the permissions assigned to them. In IGA, the control is meant to bridge disconnected systems by giving reviewers a current view of who has access, to what, and why. When that inventory is incomplete, the review becomes a paperwork exercise instead of a governance decision. The article's emphasis on regular review reflects a basic control truth: access that is not revalidated tends to persist beyond its business need.
Practical implication: review scope must cover the systems and roles that create the highest exposure, not just the easiest ones to certify.
Why automation changes review quality and speed
Manual access review processes are slow, inconsistent, and hard to evidence. Automation helps by assembling entitlement data, routing reviews to the right owners, and recording decisions in a repeatable way. That does not remove human judgement, but it changes the control from an occasional administrative exercise into a governed workflow with traceability. For IAM teams, the architectural point is that review quality depends as much on data hygiene and workflow design as it does on reviewer diligence.
Practical implication: automate evidence collection and decision capture so reviewers spend time on judgement, not data gathering.
Why privileged and high-risk accounts need separate treatment
A risk-based review model treats all access as equally reviewable, which is a mistake. Privileged accounts, critical systems, and high-risk groups deserve more frequent and more detailed review because their misuse has a larger blast radius. The Equifax example in the article shows the consequence of access that remains in place after it should have been removed. That is the control lesson: the dangerous part is not merely having access, but having access that outlives the need for it.
Practical implication: build a separate review cadence and approval path for privileged access rather than folding it into general user review cycles.
Threat narrative
Attacker objective: The attacker objective is to exploit retained access rights to reach sensitive data or systems that should no longer have been available.
- Entry occurs when a user or account retains access that no longer reflects business need, creating an unnecessary exposure window.
- Escalation occurs when stale or excessive permissions remain available on sensitive systems, including privileged paths that broaden the blast radius.
- Impact follows when unrevoked access is used to reach sensitive data or systems, as illustrated by the article's Equifax reference.
Breaches seen in the wild
- BeyondTrust breach 2024: A stolen BeyondTrust Remote Support API key let a China state-sponsored actor reset accounts and reach US Treasury workstations in 2024.
- Sisense breach 2024: A credential in Sisense's GitLab reportedly opened S3 buckets of customer tokens, passwords and certificates; CISA urged a full reset.
Read and download The State of NHI & AI Agent Breach Report 2026, covering 150+ breaches impacting Non-Human Identities including AI Agents.
NHI Mgmt Group analysis
User access reviews are not an audit afterthought, they are the governance point where access legitimacy is revalidated. The article correctly places UARs inside Identity Governance and Administration rather than treating them as a compliance appendix. That matters because access drift is a lifecycle problem, not a one-time provisioning problem. Practitioners should treat review completion as a control outcome, not a reporting task.
Risk-based review is the difference between governance and inventory management. Reviewing every entitlement with the same cadence and depth wastes reviewer attention on low-impact access while leaving privileged accounts under-scrutinised. The article's emphasis on critical systems and high-risk user groups reflects the real control hierarchy. Practitioners should prioritise the access that can cause the most damage if it is retained.
Automated access review workflows create better evidence than manual certification alone. Automation improves traceability, repeatability, and reviewer accuracy when entitlement data is already fragmented across systems. The point is not to remove human accountability but to make the evidence chain coherent enough for auditors and operators to trust. Practitioners should connect review workflow, entitlement inventory, and revocation execution in one process.
Equifax remains a useful reminder that revoked access is a lifecycle event, not a policy statement. The breach narrative in the article shows the failure mode clearly: access that should have been removed remained available long enough to matter. That is the governance gap UARs are meant to close. Practitioners should measure how quickly review decisions become enforced revocations, not just how many reviews are completed.
Access review maturity is now a programme design issue across human IAM, NHI governance, and privileged access. The same review logic that applies to employee access also applies where service accounts, elevated roles, or delegated entitlements create hidden persistence. The broader lesson is that identity governance fails when certification is disconnected from actual access lifecycle enforcement. Practitioners should align review scope with the identity type and the business impact of retained access.
From our research library:
- Over 70% of organisations lack automated access risk analysis, user access reviews and provisioning and deprovisioning, according to Pathlock's 2025 Digital Transformation and Access Risk Report.
What this signals
Access review maturity is ultimately a lifecycle problem. Organisations that separate certification from provisioning and deprovisioning end up with governance theatre rather than access control. The control has to close the loop from assignment to revocation if it is going to reduce real exposure.
The strongest access review programmes do not try to inspect everything at once. They concentrate on the entitlements that create the largest operational and compliance risk, then expand coverage as data quality and workflow discipline improve.
For practitioners
- Define the review population by risk, not by convenience Start with privileged accounts, critical systems, and user groups with broad data access, then expand to lower-risk entitlements once the highest exposure paths are covered.
- Automate entitlement collection and decision logging Pull access data from connected systems into a single review workflow so approvers can certify, revoke, or escalate decisions with a complete audit trail.
- Tie review outcomes to enforced revocation Make sure a denial, removal, or no-longer-needed decision triggers deprovisioning in the source system, not just a spreadsheet or ticket update.
- Create a separate cadence for privileged access Review administrator and elevated rights more frequently than standard user access, with stronger approval criteria and tighter evidence requirements.
Key takeaways
- User access reviews are a governance control, not a paperwork ritual, because they validate whether access still has a business justification.
- The article ties poor revocation discipline to the kind of exposure that helped make the Equifax breach so costly.
- Risk-based review, automation, and enforced revocation are the controls that turn certification into real reduction of access 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 addresses the attack surface, NIST CSF 2.0, NIST SP 800-53 Rev 5 and CIS Controls v8 set the technical controls, and ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.AA-05 — Access Permissions, Entitlements and Authorizations | UARs directly govern who retains access and whether entitlements are still justified. |
| Recommendation — Apply PR.AA-05 to review entitlements on a recurring, risk-based schedule and enforce removal decisions. | ||
| NIST SP 800-53 Rev 5 | AC-6 — Least Privilege | The article centres on reducing excess and stale access through periodic certification. |
| Recommendation — Use AC-6 to limit standing access and to challenge any entitlement that exceeds job need. | ||
| CIS Controls v8 | CIS-5 — Account Management | Account management is the operational control family behind access reviews and revocation. |
| Recommendation — Use CIS-5 to validate account necessity and remove accounts or rights that are no longer required. | ||
| ISO/IEC 27001:2022 | A.5.15 — Access control | The article is about governing access rights and reviewing them against business need. |
| Recommendation — Implement A.5.15 to define review ownership, scope, and enforcement for access rights. | ||
| OWASP Non-Human Identity Top 10 | NHI-01 — Improper Offboarding | The article's Equifax example shows the danger of access that is not revoked when it should be. |
| Recommendation — Use NHI-01 to ensure credentials and rights are removed when access is no longer needed. | ||
Key terms
- User Access Review: A user access review is a periodic check that confirms each account still needs the access it has. In identity programs, the control is used to reduce excess privilege, support compliance, and catch access that has outlived its business need.
- Access Certification: Access certification is the periodic review of whether an identity still needs its current entitlements. For NHIs, certification is only reliable when reviewers know the identity's owner, purpose, and expiry, otherwise stale machine access can persist long after the original use case has ended.
- Risk-Based Review: A review model that assigns deeper scrutiny to changes with higher security, business, or architectural impact. It reduces wasted effort on low-risk edits and concentrates human judgment where a mistake is most likely to become an incident.
- Revocation Enforcement: Revocation enforcement is the operational link between a decision to remove access and the actual removal in source systems. Without it, reviews may be completed on paper while the exposure window remains open in practice.
What's in the full article
Clarity Security's full article covers the operational detail this post intentionally leaves for the source:
- Step-by-step guidance on structuring user access reviews across teams and systems
- A practical explanation of how automation can reduce manual effort and improve review accuracy
- Risk-based prioritisation tips for privileged accounts, critical systems, and high-risk user groups
- Examples of how review outcomes support compliance tracking and audit readiness
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 building or maturing an IAM programme, it is worth exploring.
Published by the NHIMG editorial team on June 1, 2026.
Updated on October 7, 2026.
NHI Mgmt Group, the independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org