How should organisations govern non-human identities alongside workforce IAM?

Why This Matters for Security Teams

Governance breaks down when non-human identities are treated as a side issue instead of part of the core identity model. Service accounts, API keys, certificates, and agents often outlive the projects they support, inherit broad permissions, and bypass the review cadence used for workforce accounts. That mismatch matters because NHIs scale far faster than people, and the attack surface grows in ways traditional joiner-mover-leaver processes were never designed to see. NHI Mgmt Group research shows NHIs outnumber human identities by 25x to 50x in modern enterprises, while only 5.7% of organisations have full visibility into their service accounts in the Ultimate Guide to NHIs.

The governance model should therefore be unified, but not identical. Workforce IAM usually centres on user verification, role assignment, and periodic recertification. For NHI, the emphasis shifts to ownership, purpose, secret hygiene, rotation, offboarding, and exception handling. That aligns with the direction of NIST Cybersecurity Framework 2.0, which treats identity and access as an ongoing risk-management function rather than a one-time setup task. It also fits the practical lessons in Top 10 NHI Issues, where visibility gaps and stale credentials consistently appear as root causes.

In practice, many security teams discover NHI sprawl only after a secrets leak, privilege escalation, or failed offboarding has already occurred, rather than through intentional governance.

How It Works in Practice

Effective governance starts by placing NHIs into the same operating model as human identities, then adding machine-specific controls. That means every non-human identity should have an explicit owner, a documented business purpose, an expiry or review date, and a clear link to the system or workload it supports. The review process should cover entitlement scope, secret storage location, rotation status, and whether the identity is still needed. This is especially important for service accounts and API keys, because long-lived credentials often become invisible dependencies.

For most environments, the practical pattern is to separate governance from enforcement. Governance answers who owns the identity, why it exists, and when it must be reviewed. Enforcement answers how access is granted and revoked. For example, privileged functions can be wrapped in Lifecycle Processes for Managing NHIs, with PAM and RBAC used to constrain standing access, while JIT provisioning reduces the time secrets remain usable. Where workloads need cryptographic proof of identity, organisations should prefer short-lived workload credentials over embedded static secrets.

That operating model also needs real review discipline. Secret rotation, certificate expiry, and offboarding should be tracked as measurable controls, not informal reminders. NHI Mgmt Group’s Regulatory and Audit Perspectives notes that orphaned identities and stale secrets are audit issues as much as technical ones. The same logic applies to exception review: if a machine identity cannot meet baseline standards, the exception should be time-bound and risk-owned, not left to drift. This is consistent with NIST Cybersecurity Framework 2.0, which expects access controls to be monitored, adjusted, and evidenced over time.

These controls tend to break down in fast-moving CI/CD environments because identities are created faster than ownership, rotation, and revocation can be operationally tracked.

Common Variations and Edge Cases

Tighter NHI governance often increases operational overhead, so organisations have to balance control with delivery speed. That tradeoff is real, especially where hundreds of ephemeral workloads are created daily or where third-party integrations depend on legacy credentials. Current guidance suggests prioritising the riskiest identities first: high-privilege service accounts, externally exposed secrets, and agentic workloads with tool access. There is no universal standard for every environment yet, so teams should document where they are using best-effort controls versus enforced policy.

Hybrid and multi-cloud estates are the hardest case because access paths, secret stores, and audit trails fragment across platforms. In those environments, governance should focus on a single authoritative inventory, even if enforcement is distributed. NHI Mgmt Group research shows 35.6% of organisations cite consistent access across hybrid and multi-cloud environments as their top NHI security challenge, which is a strong signal that review processes must be centralised even when tooling is not. For particularly exposed credentials, cases documented in Azure Key Vault privilege escalation exposure and JetBrains GitHub plugin token exposure show how quickly a small integration weakness can become a governance failure.

For agentic systems, the bar should be higher than classic machine accounts because behaviour is goal-driven and can change at runtime. That makes static entitlements less reliable and pushes governance toward intent-aware approval, runtime policy evaluation, and short-lived credentials tied to workload identity. In practice, the hardest environments are those where agents can chain tools across cloud, code, and SaaS boundaries without a central policy point.

Related resources from NHI Mgmt Group

• How should security teams govern non-human identities alongside human accounts?
• How should teams govern non-human identities alongside CAASM and EASM?
• How should organisations govern non-human identities alongside human IAM?
• How should security teams govern non-human identities at scale?