User access management best practices still miss identity lifecycle gaps

At a glance

What this is: This is a practitioner-focused guide to user access management, with least privilege, JIT access, and periodic reviews framed as the core controls for reducing access risk.

Why it matters: It matters because IAM teams must govern human, NHI, and autonomous access patterns with the same lifecycle discipline, or privilege drift and review gaps will keep expanding the attack surface.

By the numbers:

• Only 20% have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotating them.
• 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.

👉 Read Zluri's article on 8 user access management best practices

Context

User access management is the discipline of deciding who can reach which systems, data, and actions, then keeping that access aligned to job need over time. The article focuses on a familiar enterprise problem: access is often granted faster than it is reviewed, revoked, or tightly scoped, which leaves organisations with more privilege than they can explain or control.

For IAM programmes, the operational issue is not the existence of controls but the quality of their lifecycle execution. Role design, access reviews, offboarding, and JIT provisioning all matter here, because the same control failures that affect human users also show up in NHI estates when credentials outlive the task they were issued for.

Key questions

Q: How should security teams implement least privilege without slowing operations?

A: Start by mapping permissions to real job tasks and eliminating broad catch-all roles. Then set approval paths for exceptions, so access is granted only where the business need is explicit. The goal is not perfect minimalism. It is to keep privilege narrow enough that a single compromise or mistake does not expose unrelated systems or data.

Q: Why do access reviews often fail to reduce risk?

A: Access reviews fail when the data they rely on is incomplete, stale, or disconnected from actual entitlement changes. If reviewers cannot see who still has what access, they cannot make meaningful decisions. Reviews also fail when removal actions are not enforced after approval, leaving documented governance but unchanged exposure.

Q: What breaks when just-in-time access is treated as a complete governance model?

A: JIT breaks down when teams assume temporary access alone solves privilege risk. It does not. Without tight expiry, logging, ownership, and exception handling, the organisation still has weak governance, only with shorter windows. JIT should reduce exposure duration, not replace entitlement control or lifecycle discipline.

Q: How do organisations keep service accounts and human accounts governed the same way?

A: Use the same lifecycle logic for both: assign a clear owner, define the access purpose, review necessity, and revoke access when the purpose ends. Human and non-human identities differ in execution, but they fail in similar ways when privilege is left standing after the task changes or ends.

Technical breakdown

Role-based access control and least privilege in practice

Role-based access control assigns permissions through named roles instead of granting them one by one. In practice, its value depends on how tightly roles match real job duties. If roles become catch-all containers, least privilege turns into a label rather than a control. The article’s logic is sound at the principle level: access should follow responsibility, not convenience. But RBAC fails when role definitions lag business change, when exceptions are never cleaned up, or when teams confuse broad operational access with legitimate need.

Practical implication: review role design for privilege inflation and remove access that exists only because a role was never re-baselined.

Just-in-time access and ephemeral privilege windows

Just-in-time access gives a user temporary access for a specific task, then removes it when the task ends. That reduces standing privilege, but it only works when approvals, expiry, and logging are all enforced consistently. JIT is not a substitute for governance. It is a timing model for authorisation, and it fails if teams create exceptions, leave elevation open-ended, or depend on manual follow-through after access should have expired. In identity terms, it is strongest where entitlement duration can be bounded and audited.

Practical implication: define expiry and revocation as mandatory controls, not optional cleanup steps, before adopting JIT at scale.

Access reviews, offboarding, and access creep

Access creep happens when users accumulate permissions that no longer match current duties. Access reviews are supposed to catch that drift, but they only work if review data is accurate, timely, and acted on. Offboarding closes the loop by removing access when a person leaves or changes context. The deeper problem in many environments is not missing policy but incomplete execution across systems, especially where SaaS, manual grants, and shadow IT sit outside the main IAM path. That creates blind spots that audits often find too late.

Practical implication: tie review outcomes to enforced removal workflows so unused access is actually revoked, not just documented.

Breaches seen in the wild

• Cisco DevHub NHI breach — IntelBroker exploited exposed Cisco credentials, API tokens and keys in DevHub.
• DeepSeek breach — DeepSeek breach exposed 1M+ log lines and sensitive secret keys.

Read our 52 NHI Breaches Analysis report for a comprehensive view of breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Access creep is not a side effect. It is the predictable failure mode of slow lifecycle governance. The article correctly points to role definition, reviews, and offboarding, but the field should treat access creep as the default outcome when entitlements are created faster than they are retired. That is true across human and machine identities, because stale privilege is still stale privilege even when the subject is a service account or workload. Practitioners should treat lifecycle lag as a control problem, not a hygiene issue.

Least privilege only works when entitlement scope stays legible over time. The article frames least privilege as a provisioning principle, but in real programmes the harder problem is keeping access readable after role changes, project drift, and exception sprawl. When scope is not legible, review processes become ceremonial and revocation becomes approximate. IAM teams need to see that the control failure is not absence of policy, but loss of entitlement clarity across the access lifecycle.

JIT access changes timing, not trust. Temporary access reduces standing exposure, but it does not fix weak approval logic, poor logging, or poorly bounded task scope. That matters because many teams mistake short duration for strong governance. The practitioner lesson is that time-bounded privilege still needs explicit ownership, expiry enforcement, and post-use verification to remain defensible.

Identity blast radius becomes the better way to think about UAM maturity. The article’s themes, especially least privilege and access reviews, all point to the same question: how much damage can a single entitlement mistake cause before it is corrected? This is where user access management, NHI governance, and autonomous access controls meet. The practitioner conclusion is to measure and reduce blast radius, not just count reviewed accounts.

Standing access review cadences do not resolve fast-moving privilege drift. Review cycles assume there is stable access to certify. That assumption fails when access is granted and consumed faster than the review window, especially in delegated and machine-mediated workflows. The implication is that identity governance must move toward event-driven visibility, because periodic review alone cannot keep pace with modern access behaviour.

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.
• 96% of organisations store secrets outside of secrets managers in vulnerable locations including code, config files, and CI/CD tools.
• Use The 52 NHI breaches Report to trace how unresolved access and secret handling issues become real incident patterns.

What this signals

Identity blast radius: the practical measure of how far one bad entitlement can spread before it is corrected. UAM programmes that rely on periodic review instead of continuous entitlement hygiene will keep discovering that the most damaging access is the access nobody thought to re-examine. For teams extending governance into machine identities, the lesson is to align entitlement scope, owner assignment, and revocation with the actual lifecycle of the credential, not the annual audit cycle.

Access governance is now a cross-domain discipline, not a human-only control set. NHIMG research shows only 5.7% of organisations have full visibility into their service accounts, which means many teams are already struggling to govern non-human access before they attempt more advanced identity automation. The next maturity step is to unify review, offboarding, and privilege scoping across humans, service accounts, and agentic systems.

For practitioners

• Rebuild role definitions around actual job tasks Map current entitlements to current duties, then remove permissions that exist only because a role grew over time. Use this to separate legitimate operational access from inherited privilege.
• Make offboarding a hard revocation workflow Tie leaver and mover events to enforced removal of app access, API keys, and elevated roles so access does not survive the reason it was granted. Where possible, automate the final revoke step across SaaS and infrastructure systems.
• Use JIT only where expiry is enforced technically Do not rely on process reminders to end elevated access. Build expiry, logging, and exception handling into the access path so temporary privilege actually disappears when the task is complete.
• Prioritise access reviews by blast radius Start with accounts and roles that can reach sensitive data, admin functions, or multiple systems. This focuses reviewer effort where stale access would do the most damage.
• Extend lifecycle controls to non-human identities Apply the same joiner-mover-leaver logic to service accounts, tokens, and API keys that you apply to human users. The control objective is the same: remove access when the need ends.

Key takeaways

• User access management fails most visibly when role scope, review cadence, and revocation speed drift apart.
• The scale of the problem is exposed by stale access, with privilege accumulation and incomplete offboarding creating ongoing exposure.
• The control that changes outcomes is not policy language alone, but enforced lifecycle removal tied to real entitlement ownership.

Key terms

• User Access Management: User access management is the discipline of deciding who can reach which systems, data, and functions, then keeping those permissions aligned to current need. It combines provisioning, review, and revocation so access remains explainable, auditable, and limited to legitimate work.
• Least Privilege: Least privilege means giving an identity only the permissions required to complete a specific task. In practice, it is not a one-time setup choice. It depends on ongoing role maintenance, exception control, and prompt removal when the task, project, or employment context changes.
• Access Creep: Access creep is the gradual accumulation of permissions that no longer match a user’s current role or purpose. It often appears after promotions, temporary projects, or manual exceptions, and it becomes a security issue when stale access remains active long after the original need has disappeared.
• Just-in-Time Access: Just-in-time access is a pattern for granting privileges only when they are needed and removing them when the task ends. It reduces standing exposure, but it only works when expiry, logging, and exception handling are technically enforced rather than left to process memory.

Deepen your knowledge

User access management, least privilege, and lifecycle control are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are extending access governance from humans into service accounts or AI-driven workflows, it is worth exploring.

This post draws on content published by Zluri: 8 User Access Management Best Practices. Read the original.