Service principals are non-human identities, so they do not always follow the same policy inheritance that human accounts do. In low-code platforms, that can let API access bypass the restrictions teams assume are enforced by directory groups. The risk is not simply exposure, but misclassification of the actor type that is actually making the request.
Why This Matters for Security Teams
Low-code platforms often blur the boundary between citizen development and production integration, which makes service principals a governance issue rather than just a technical convenience. When a service principal is misclassified as a normal app integration, teams may assume directory group policies, approval workflows, and human-centric review steps still apply. They often do not. NHI governance has to account for actor type, not just app ownership, as discussed in the Top 10 NHI Issues and the Regulatory and Audit Perspectives guidance.
This matters because low-code tooling is designed to accelerate API composition, workflow automation, and external data access, which can quietly expand blast radius if service principal permissions are broad, inherited loosely, or reviewed infrequently. NIST’s Cybersecurity Framework 2.0 reinforces that identity governance must be tied to asset and access management outcomes, not just login hygiene. In practice, many security teams encounter over-privileged service principals only after a low-code workflow has already been used to move data or call downstream systems outside intended controls.
How It Works in Practice
Service principals create governance risk in low-code environments because they are non-human identities with direct API authority, yet many platforms treat them as application configuration rather than governed identities. That means a maker can connect a workflow to a service principal, inherit broad permissions, and deploy automation without the same approval chain used for a human admin account. The risk is not just access exposure. It is the gap between what the platform displays and what the underlying identity can actually do.
Operationally, teams should treat every service principal in a low-code stack as a scoped workload identity, with explicit ownership, purpose, expiry, and monitored usage. The strongest pattern is to map each principal to a named business process, reduce permissions to the narrowest API set, and require periodic review of both the workflow and the identity behind it. This aligns with the lifecycle approach in Ultimate Guide to NHIs — Lifecycle Processes for Managing NHIs and with NIST CSF 2.0 identity governance expectations.
- Inventory every service principal, including those embedded in low-code connectors and hidden automations.
- Classify the actor as non-human and apply NHI-specific review, not human joiner-mover-leaver logic.
- Use least privilege, short-lived secrets, and explicit token rotation for each integration.
- Log both workflow execution and the service principal used, so audit trails show who or what acted.
Where platforms allow delegated admin, conditional access, or connector-level overrides, those controls should be tested independently of the UI because policy inheritance is often inconsistent across tenants and connectors. These controls tend to break down when low-code makers can self-provision integrations in production and the identity layer is not separated from the application layer.
Common Variations and Edge Cases
Tighter control over service principals often increases friction for citizen developers, so organisations have to balance delivery speed against the risk of hidden privilege. Current guidance suggests this is best handled through tiering, not blanket restriction: low-risk workflows can use constrained connectors, while anything touching sensitive data, finance, or admin APIs should require stronger approval and monitoring.
Edge cases appear when a platform supports both human sign-in and non-human token exchange, because the same workflow may run under different actor types depending on environment, schedule, or connector fallback. Another common gap is third-party OAuth access, where visibility is weaker than internal app registrations; NHIMG research on the state of non-human identity security shows that many organisations still lack full visibility into third-party vendor connections. That finding matters here because low-code platforms often amplify opaque integrations rather than create them.
There is no universal standard for this yet, but best practice is evolving toward continuous entitlement review, policy-as-code for connector approvals, and clear separation between maker permissions and execution identities. The OWASP NHI Top 10 is useful when low-code workflows behave like autonomous execution paths. In practice, governance fails fastest when a service principal is treated as “just an app setting” after it has already become the pathway to production data.
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 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 | Addresses weak lifecycle control over non-human credentials in low-code flows. |
| NIST CSF 2.0 | PR.AC-4 | Covers access enforcement for identities, including service principals and connectors. |
| NIST AI RMF | Supports governance of automated actors whose actions depend on context and oversight. |
Inventory service principals, rotate secrets, and revoke any identity not tied to an approved business process.
Related resources from NHI Mgmt Group
- Why do service principals create more governance risk than managed identities?
- Why do low-code workflow platforms increase identity governance risk around signing?
- Why do legacy certificate APIs create governance risk during platform migrations?
- Why do managed service identities create governance gaps in enterprise estates?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 25, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
