How should security teams govern non-human access across applications and data?

Why This Matters for Security Teams

Non-human access should be governed as identity because applications, scripts, pipelines, and service accounts now hold the same kinds of privileges that once sat only with humans. If those identities are unmanaged, teams lose track of who can reach production data, which credentials are still valid, and which integrations can be revoked safely. That is why the current guidance in NIST Cybersecurity Framework 2.0 and the OWASP Non-Human Identity Top 10 both emphasize inventory, access control, and lifecycle oversight.

NHIMG research shows the scale of the problem: only 5.7% of organisations have full visibility into their service accounts, and 71% of NHIs are not rotated within recommended time frames. That is not a niche hygiene issue. It is a governance failure that turns every forgotten API key, certificate, and application account into a standing path into sensitive systems. Security teams that treat these assets as exceptions usually discover them only after a breach, an audit request, or a failed offboarding event, rather than through intentional control design.

How It Works in Practice

Effective governance starts with a single authoritative inventory for all non-human identities, including service accounts, API keys, certificates, workload identities, and application accounts. Each record should have an owner, a business purpose, a system boundary, an expiry state, and a review cadence. That makes the identity governable instead of merely observable. NHIMG’s Ultimate Guide to NHIs frames this as the foundation for lifecycle control, revocation, and auditability.

From there, security teams should separate three decisions: who owns the identity, what it is allowed to do, and when it must be revalidated or removed. Best practice is evolving, but the direction is consistent: use least privilege, time-bounded access, and continuous review rather than static exceptions. The strongest programs also tie credentials to the underlying workload, not just the application name. That means using workload identity where possible, issuing short-lived secrets or tokens, and revoking them automatically when the task, job, or deployment ends.

• Map every non-human identity to a human owner and a service owner.
• Classify each identity by privilege level and data access scope.
• Set expiration dates for keys, certificates, and unused accounts.
• Review high-risk identities more frequently than low-risk automation accounts.
• Remove dormant identities and rotate credentials on a defined schedule.

This approach also improves incident response. If a credential leaks, responders can identify the owner, scope the blast radius, and revoke access without hunting across unrelated teams. These controls tend to break down when identities are created ad hoc in CI/CD pipelines, because ownership and expiry metadata are often missing at the moment the credential is issued.

Common Variations and Edge Cases

Tighter non-human access control often increases operational overhead, requiring organisations to balance auditability against deployment speed and integration friction. That tradeoff is real, especially in environments with legacy middleware, shared service accounts, or vendor-managed connectors. Guidance from NHIMG’s Lifecycle Processes for Managing NHIs shows that lifecycle discipline matters, but there is no universal standard for how quickly every class of identity must be rotated.

Edge cases usually appear in three places. First, shared accounts may be technically difficult to replace, but they should still be isolated, monitored, and scheduled for retirement. Second, third-party integrations can expose access that internal teams cannot fully see, so governance should include contractual ownership, approval workflows, and periodic validation. Third, certificates and machine tokens often outlive the systems that created them, so expiry tracking must be explicit rather than assumed.

For control design, the practical rule is simple: if the organisation cannot answer who owns the identity, what data it touches, and when it expires, then it is not under governance. In those cases, the safest response is to reduce scope, shorten validity, and reissue access through a managed workflow rather than preserve the exception indefinitely.

Related resources from NHI Mgmt Group

• How should security teams govern non-human identities that have persistent access?
• How should security teams govern non-human identities at scale?
• How should security teams govern non-human identities for compliance?
• How should security teams govern non-human identities in Salesforce?