They should align on shared lifecycle controls while accepting that the identities differ. Human certificates, service credentials, and workload identities all need issuance rules, revocation paths, and review cadences, even if the tooling is different. The goal is one governance model with different execution patterns.
Why This Matters for Security Teams
Passwordless governance is often treated as a human workforce project, but NHI teams quickly discover the same control gaps in certificates, API keys, service accounts, and workload identities. The shared problem is not the login factor itself. It is the lifecycle: who can issue an identity, how long it lives, what proof is required to use it, and how quickly it is revoked when risk changes. NIST’s Cybersecurity Framework 2.0 reinforces that identity governance must be tied to access management and continuous oversight, not just enrollment.
NHIMG research shows why this matters operationally. In the 2024 ESG report on managing non-human identities, two-thirds of enterprises reported a successful cyberattack involving compromised NHIs, which means governance failures are already translating into incidents. The lesson for human IAM and NHI teams is that passwordless does not remove governance, it shifts it from password policy to proof, binding, and revocation discipline. In practice, many teams only discover this after a certificate or token outlives its intended trust boundary.
How It Works in Practice
The cleanest alignment model is to standardise governance outcomes and allow different execution paths for humans and NHIs. Human IAM may use phishing-resistant authentication, device posture, and step-up checks. nhi governance may use workload identity, short-lived certificates, token exchange, and policy-based issuance. The control objective is the same: only the right identity should receive the right privilege for the right duration.
Shared governance usually centers on four control layers:
- Issuance policy: define approval, proofing, and ownership requirements before an identity or credential is created.
- Binding policy: ensure the credential is tied to a specific subject, workload, device, or workload identity, not a reusable shared secret.
- Revocation policy: require immediate invalidation on role change, compromise, end of task, or decommissioning.
- Review policy: run regular access recertification and ownership attestation for both human and non-human identities.
For NHIs, current guidance increasingly favors short-lived credentials and workload identity primitives such as SPIFFE-style identifiers or OIDC-backed federation, because static secrets create standing risk that passwordless programs are meant to reduce. For human identities, passwordless governance should still preserve lifecycle evidence, since certificate-based access can become effectively permanent if renewal is automated without review. NIST SP 800-53 Rev. 5 helps anchor this through account management and access enforcement controls, while the NHIMG lifecycle guidance for NHIs is useful for mapping issuance, rotation, and retirement to one operating model. The right design is less about shared tooling and more about shared control intent.
This guidance tends to break down in environments with unmanaged service accounts, ad hoc API token creation, or application teams that can bypass central approval flows because the identity inventory becomes incomplete and revocation cannot be proven.
Common Variations and Edge Cases
Tighter passwordless governance often increases operational overhead, so organisations must balance assurance against deployment speed and developer autonomy. That tradeoff is especially visible when human IAM and NHI teams share policy objectives but not platforms.
One common edge case is certificate-based human access for admins or contractors. It looks passwordless, but if certificate issuance is broad and renewal is automatic, the control behaves more like a long-lived credential than a strong factor. Another edge case is service-to-service authentication in CI/CD, where teams use vault-issued tokens, cloud-native identities, or federated workload credentials. Best practice is evolving, but the direction is clear: long-lived shared secrets should be replaced with ephemeral credentials and explicit ownership.
Another challenge is governance ownership. Human IAM teams often own proofing, identity proofing, and joiner-mover-leaver workflows, while NHI teams own secrets, certificates, and workload access. The two groups should align on a single policy vocabulary for risk, TTL, exception handling, and review cadence, then map it into different technical enforcement paths. The Top 10 NHI Issues research is a strong reminder that poor rotation and over-privilege remain persistent failure modes, even in otherwise mature programs.
There is no universal standard for this yet, but the practical answer is to govern passwordless access as a lifecycle discipline, not a login method.
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, CSA MAESTRO and OWASP Agentic AI Top 10 address the attack and risk surface, while NIST CSF 2.0 and NIST SP 800-53 Rev 5 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Lifecycle control is central to passwordless NHI governance. |
| CSA MAESTRO | ID-01 | MAESTRO covers identity governance for autonomous and service-driven access. |
| OWASP Agentic AI Top 10 | A1 | Agentic systems rely on passwordless workload access and runtime trust. |
| NIST CSF 2.0 | PR.AC-4 | Least privilege and access authorization support shared governance outcomes. |
| NIST SP 800-53 Rev 5 | AC-2 | Account lifecycle controls fit both human and non-human identity governance. |
Map passwordless access to least-privilege controls and review entitlements regularly.
