They leave gaps when the organisation treats platform coverage as the same thing as lifecycle control. SASE and CASB can enforce policy, but they do not by themselves establish who owns an entitlement, whether a token was revoked, or whether a service account still has standing access. That is why identity context must be attached to the control model.
Why This Matters for Security Teams
SASE and CASB are useful enforcement layers, but they are not identity governance systems. They can inspect traffic, block risky data flows, and apply policy at the edge, yet they do not answer the harder questions security teams face: who owns a service account, when was its token last issued, and whether its access still matches its purpose. That gap is why NHI lifecycle control has to sit alongside network and cloud policy, not inside it.
When organisations confuse coverage with governance, they often leave standing access untouched while assuming the platform has solved the problem. The result is especially visible in service accounts, API keys, and automation tokens that are invisible to users but still powerful enough to move data or call internal tools. NHIMG research shows that only 5.7% of organisations have full visibility into their service accounts in the Ultimate Guide to NHIs, which helps explain why control-plane tools alone do not close the loop. As the NIST Cybersecurity Framework 2.0 makes clear, governance depends on ownership, accountability, and lifecycle discipline, not only enforcement points. In practice, many security teams discover the gap only after a stale credential is used outside the intended control path, rather than through intentional lifecycle review.
How It Works in Practice
The practical fix is to attach identity context to policy decisions. SASE and CASB can remain the enforcement layer, but the organisation needs an identity source of truth that tracks the principal, its owner, its purpose, its expiry, and its revocation status. For NHIs, that means treating credentials as short-lived operational artefacts, not as permanent access grants. Current guidance suggests combining privileged access management, secrets governance, and workload identity so that every token or certificate is tied to a specific workload and task.
In mature environments, this usually looks like:
- Workload identity for the agent or service, rather than a shared static credential.
- Just-in-time issuance for secrets and tokens, with short TTLs and automatic revocation.
- Ownership metadata for every entitlement, so stale access can be assigned and remediated.
- Policy evaluation at request time, informed by context such as workload, destination, sensitivity, and session state.
That model aligns with the lifecycle emphasis in the Ultimate Guide to NHIs and with the control expectations behind CISA Zero Trust Maturity Model, where identity, device, and policy signals must work together. SASE or CASB can then enforce the decision, but they do not replace the inventory, rotation, and offboarding processes that make the decision trustworthy. These controls tend to break down when organisations have thousands of machine identities created outside central IAM because ownership and revocation data are incomplete.
Common Variations and Edge Cases
Tighter identity control often increases operational overhead, requiring organisations to balance enforcement speed against change-management friction. That tradeoff is most visible in environments with legacy apps, vendor-managed integrations, or automation that still relies on long-lived API keys. Best practice is evolving here, and there is no universal standard for every platform, but the direction is consistent: long-lived secrets should be exceptions, not the default.
Some teams also overestimate what “inline control” can do. A CASB may detect risky file movement, and a SASE stack may stop access to an unapproved destination, but neither can reliably tell whether the underlying credential should have existed in the first place. That is why identity governance has to cover issuance, ownership, rotation, and revocation across the full lifecycle. NHIMG’s Top 10 NHI Issues and the 52 NHI Breaches Analysis both reinforce the same pattern: breaches often persist because a credential remains valid after the platform layer has already approved the session. The edge case that matters most is third-party or embedded automation, where access is technically “covered” by policy but practically unmanaged because no one owns the entitlement end to end.
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 and CSA MAESTRO address the attack and risk surface, while 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 | Static secrets and weak lifecycle control are the core gap behind SASE/CASB coverage. |
| CSA MAESTRO | MAESTRO addresses governance for autonomous and cloud-connected workloads. | |
| NIST AI RMF | AI RMF helps manage context, accountability, and lifecycle risk for autonomous workloads. |
Inventory NHI credentials, assign owners, and enforce rotation plus revocation on a fixed cadence.
