Manual workflows slow down engineers, especially during incidents and on-call work, and they often produce inconsistent approvals. Ad hoc scripts can reduce drift temporarily, but they are brittle and hard to maintain across many systems. Over time, the organisation loses confidence that access is truly least privilege or that changes are being reversed reliably.
Why This Matters for Security Teams
Manual access requests and ad hoc scripts look workable until the environment becomes time-sensitive, distributed, and heavily automated. At that point, the real failure is not just delay, but loss of control: approvals become inconsistent, scripts drift from actual system state, and privileged access can linger long after the task is complete. NHI Management Group notes that only 20% of organisations have formal processes for offboarding and revoking API keys in the Ultimate Guide to NHIs.
This is where conventional access handling breaks down. Security teams may think they have least privilege because a request was approved, yet the approval path says little about how access is used minutes later during an incident, deployment, or automation run. The gap is especially visible when teams rely on manual ticketing to grant high-risk access, while scripts try to claw back privilege after the fact. Current guidance from NIST Cybersecurity Framework 2.0 and the OWASP Non-Human Identity Top 10 points toward stronger identity lifecycle control, not more manual exception handling. In practice, many security teams encounter privilege creep only after an outage, audit finding, or secrets exposure has already shown that the process was never reliably reversible.
How It Works in Practice
Manual requests and scripts fail because they separate intent from enforcement. A person asks for access, someone approves it, and a script or operator later makes the change. That works when volume is low and systems are few. It fails when privileged access must be granted and revoked across cloud services, CI/CD tooling, databases, and production support paths with different owners and different rollback rules.
The stronger model is lifecycle-based and policy-driven. Rather than waiting for a human ticket to move through a queue, access should be bound to workload identity, task context, and time. That means issuing short-lived credentials, validating requests at runtime, and revoking access automatically when the job ends. This is consistent with NHIMG lifecycle guidance in the NHI Lifecycle Management Guide and with control expectations in NIST SP 800-53 Rev. 5 Security and Privacy Controls.
- Use JIT access so privilege exists only for the approved task window.
- Prefer workload identity over shared admin accounts so the actor is cryptographically identifiable.
- Apply policy at request time, not via static role assignment that ages poorly.
- Automate revocation and verification, because manual cleanup is where drift accumulates.
Where this matters most is incident response, release engineering, and high-churn support operations. These controls tend to break down when organisations depend on bespoke scripts across multiple systems because the scripts rarely model every dependency, rollback path, or emergency override.
Common Variations and Edge Cases
Tighter privileged access controls often increase operational overhead, requiring organisations to balance speed against auditability. That tradeoff is real, especially for on-call engineers and platform teams that need rapid intervention. Best practice is evolving toward fewer standing privileges, more JIT elevation, and stronger approval context, but there is no universal standard for every environment yet.
Some teams still use scripts as a transitional control, and that can be acceptable if the scripts are versioned, reviewed, logged, and paired with automated expiry. The problem is not scripting itself, but scripting as a substitute for governance. If a script can grant access without proving who requested it, why it was needed, and when it will be removed, then it becomes a privileged pathway outside normal control design. That is exactly the kind of pattern highlighted in the Top 10 NHI Issues and the audit-focused section of the Ultimate Guide to NHIs — Regulatory and Audit Perspectives.
The hardest edge case is emergency access during outages. In those moments, organisations often relax process discipline first and ask questions later. That is where manual workflows and ad hoc scripts create the most risk, because they encourage temporary exceptions that never fully close.
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, OWASP Agentic AI Top 10 and CSA MAESTRO address the attack and risk surface, while NIST AI RMF and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Manual access often leads to stale NHI credentials and weak revocation. |
| OWASP Agentic AI Top 10 | A-02 | Runtime privilege changes are risky when automated actors can chain actions unpredictably. |
| CSA MAESTRO | PRC-02 | Privileged access for automated workloads needs lifecycle control and traceability. |
| NIST AI RMF | Runtime governance is needed where automated decisions affect access and operations. | |
| NIST CSF 2.0 | PR.AC-4 | Least-privilege access management is directly implicated by manual request workflows. |
Document access decision ownership, monitoring, and escalation paths for automated workflows.
Related resources from NHI Mgmt Group
- Why do API testing programs fail when teams rely on manual checks or ad hoc scripts?
- What breaks when organisations rely on manual access reviews and ad hoc privilege removal?
- How should security teams manage privileged access for vendors and remote users without relying on VPN access?
- What breaks when privileged access is managed through scripts and manual reconciliation?
