Manual approval paths slow work, encourage ticket fatigue, and often push teams toward broad, persistent access to avoid delays. Permanent group membership also leaves access in place after the task is finished. The result is weaker least privilege, harder audits, more stale permissions, and more exposure if an account is compromised.
Why This Matters for Security Teams
Manual approvals and permanent group membership are a poor fit for systems that need to move quickly while still limiting exposure. They turn access into a human bottleneck, which encourages blanket entitlements, shared groups, and exceptions that outlive the task they were meant to support. For non-human identities, that is especially dangerous because credentials are often reusable, automated, and hard to see once they spread across services.
NHI Management Group’s Ultimate Guide to NHIs notes that most organisations still struggle to fully address NHI risk, and that gap shows up quickly when access has to wait for ticket queues or approval chains. The result is not just delay. It is lingering privilege, weak traceability, and approval drift where nobody can explain why a group still exists or why a service account still belongs to it. In practice, many security teams encounter overexposure only after a routine permission review or compromise has already made the risk visible.
How It Works in Practice
When access is granted through manual approvals and permanent groups, the process usually starts with a request, moves through a queue, and ends with someone adding the identity to a broad entitlement bucket. That pattern is workable for stable human roles, but it breaks down for workloads that change tasks frequently. NHI governance is stronger when access is task-specific, time-bound, and automatically removed when the work ends. That is the logic behind just-in-time access, ephemeral secrets, and workload identity, not long-lived membership in a standing group.
Operationally, teams should separate authentication from authorisation and treat each request as a runtime decision. Standards such as OWASP Non-Human Identity Top 10 and NIST SP 800-53 Rev. 5 both reinforce least privilege, approval traceability, and periodic review, but for NHIs the better pattern is automatic enforcement. A mature flow usually includes:
- runtime policy checks based on task, environment, and risk
- short-lived credentials issued only for the approved action
- automatic revocation when the task completes or expires
- separate entitlement paths for humans, services, and agents
This is where manual approval becomes harmful: approvers cannot reliably predict every downstream call a workload will make, so they tend to approve broader access than necessary. The safest control plane is one that can issue and revoke access without human delay, while preserving evidence of who approved what and why. These controls tend to break down in high-change CI/CD environments because access requests arrive faster than reviewers can evaluate them, pushing teams back toward standing access.
Common Variations and Edge Cases
Tighter approval controls often increase operational overhead, requiring organisations to balance review quality against delivery speed. That tradeoff is real, especially when teams must support production incidents, legacy applications, or third-party integrations that cannot easily adopt modern identity patterns. Current guidance suggests using temporary exceptions only when the risk is understood and the exception is measured, not as a default operating model.
Some environments still need group membership, but the group should be narrowly scoped and time-boxed rather than permanent. The same applies to emergency access: it can be necessary, but it should be monitored, logged, and revoked automatically. This is also where NHI-specific risk becomes visible. NHIMG’s Ultimate Guide to NHIs reports that 97% of NHIs carry excessive privileges, and that pattern is reinforced when teams use groups as a shortcut for access approvals instead of designing per-task controls. For incident-driven environments, permanent access is especially dangerous because it survives the event that justified it. In practice, permanent group membership usually stays in place until an audit, a breach, or an outage forces removal.
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 address the attack and risk surface, while NIST CSF 2.0, NIST SP 800-63, NIST Zero Trust (SP 800-207) and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Permanent access and weak revocation directly increase NHI credential exposure. |
| NIST CSF 2.0 | PR.AC-4 | Access permissions should be managed, reviewed, and limited to what is needed. |
| NIST SP 800-63 | Identity assurance matters when approvals create broad access for automated accounts. | |
| NIST Zero Trust (SP 800-207) | Zero Trust rejects standing trust and favors continuous verification of access. | |
| NIST AI RMF | AI systems and agents need governed, traceable access decisions rather than static approvals. |
Map group memberships to least-privilege reviews and remove access that no longer matches job or workload need.
