How should security teams run privileged access reviews without missing high-risk accounts?

Start with a complete inventory of privileged access across cloud, SaaS, on-prem, and service-account estates. Then require ownership, usage, and business justification in every certification task so reviewers can challenge access rather than rubber-stamp it. The review only works when it is driven by current need, not stale role labels.

Why This Matters for Security Teams

Privileged access reviews fail when they are treated as a static compliance exercise instead of a live check on risk. High-risk accounts are often hidden in service accounts, cloud roles, SaaS admins, and delegated access paths that do not look “privileged” in a simple RBAC export. That is why current guidance stresses complete inventory, current usage evidence, and business justification rather than a one-time attestation sweep. The problem is not just who has access, but whether that access is still needed, actively used, and tied to a real owner.

NHIMG research shows how easily blind spots persist: The State of Non-Human Identity Security reports that only 1.5 out of 10 organisations are highly confident in their ability to secure NHIs. For privileged reviews, that confidence gap matters because stale entitlements and over-privileged accounts are often the same conditions that keep review queues noisy and incomplete. The review process needs to surface exceptions, not certify inherited access. Security teams should also align the review cadence with the control expectations in the NIST Cybersecurity Framework 2.0 and the OWASP Non-Human Identity Top 10.

In practice, many security teams discover the highest-risk accounts only after an audit finding, a incident response review, or a failed application dependency test, rather than through intentional certification design.

How It Works in Practice

The review should start with an authoritative inventory that merges cloud IAM, SaaS administrators, on-prem privileged groups, federated roles, break-glass accounts, and service identities. Without that baseline, reviewers only see a subset of the privilege surface and end up approving what is visible instead of what is risky. From there, each certification task should require three things: named ownership, usage evidence, and a business justification that is specific enough to challenge. A generic label such as “application support” is not enough if the account has tenant-wide control or broad API authority.

Security teams get better outcomes when they rank review items by exposure rather than by directory structure. For example:

• Review standing admin roles before low-impact group memberships.
• Prioritise inactive but privileged accounts, especially service accounts with long TTLs.
• Require evidence of recent use, not just historical assignment.
• Escalate shared accounts, orphaned accounts, and delegated access chains for manual validation.

The strongest reviews are cross-functional. Application owners can confirm necessity, system owners can validate technical scope, and security can challenge whether the access model still matches current business need. If the environment includes non-human identities, the review should also check whether the credential itself is rotated, scoped, and tied to an owning workload, which is central to the lifecycle approach described in the NHI Lifecycle Management Guide. Teams that need a deeper map of recurring failure patterns should compare their findings with the 52 NHI Breaches Analysis and the Ultimate Guide to NHIs, Key Challenges and Risks.

These controls tend to break down when privilege is distributed across multiple tenants and identity systems because no single owner can validate the full effective access path.

Common Variations and Edge Cases

Tighter certification standards often increase review workload, requiring organisations to balance stronger assurance against reviewer fatigue and business disruption. That tradeoff is especially visible for emergency access, machine-to-machine accounts, and legacy platforms where ownership is unclear. Current guidance suggests treating these as explicit exception classes rather than letting them disappear into standard recertification cycles.

Break-glass accounts should be reviewed for storage, monitoring, and activation controls, but they may not fit normal usage-based attestations because they are intentionally dormant. Service accounts are another edge case: they may have no human “user,” yet they still need a business owner, a technical owner, and a clear reason for each permission. In some environments, best practice is evolving toward risk-based review frequency, where the most sensitive accounts are reviewed more often and low-risk entitlements are sampled instead of exhaustively re-certified.

For organisations with strong SaaS sprawl or delegated admin models, the practical issue is visibility rather than policy design. Many teams cannot confidently review what they cannot inventory, which is why NHIMG’s research on The State of Non-Human Identity Security is so relevant to review hygiene. Where access data is fragmented, a targeted control set from the OWASP Non-Human Identity Top 10 and the NIST Cybersecurity Framework 2.0 is a more reliable starting point than a broad annual attestation campaign.

Related resources from NHI Mgmt Group

• How should security teams run access reviews for non-human identities?
• How should NHS security teams reduce privileged access risk without disrupting clinical operations?
• How should security teams reduce privileged access risk in OT without causing downtime?
• How should security teams govern high-risk ERP transactions beyond access reviews?