Accountability should sit with the system owner, identity team, and platform owner together, because non-expiring credentials are both a governance and an engineering problem. The owner must justify the exception, the identity team must track it, and the platform owner must ensure that revocation and lifecycle policy are actually enforceable.
Why This Matters for Security Teams
Non-expiring credentials are not just a hygiene issue. They create durable access paths that outlive projects, owners, and sometimes the systems they were meant to protect. For security teams, the problem is accountability: if a secret never expires, someone must still own the risk, the justification, and the revocation path. That is why NHI governance ties exception handling to lifecycle controls, not just access approvals.
The operational risk is amplified when long-lived secrets are used in pipelines, service accounts, or automation that no one revisits after deployment. Current guidance from OWASP Non-Human Identity Top 10 and NHIMG’s Ultimate Guide to NHIs — Static vs Dynamic Secrets both point to the same failure mode: secrets become invisible once they are embedded in code, CI/CD, or shared operational runbooks.
In practice, many security teams encounter the blast radius of a non-expiring credential only after it has already been copied into three environments and no one can prove who last approved it.
How It Works in Practice
Accountability for non-expiring credentials should be split across three functions, but not diluted across them. The system owner owns the business need and the exception request. The identity team owns the control framework, inventory, and periodic review. The platform owner owns implementation details such as where the secret lives, how it is stored, and whether revocation is technically enforceable. This shared model aligns with the control intent in NIST SP 800-53 Rev 5 Security and Privacy Controls, especially where least privilege, configuration management, and access review responsibilities intersect.
In a mature workflow, the exception record should include:
- Named business owner and technical owner
- Purpose of the credential and scope of access
- Why JIT or short-lived credentials are not yet feasible
- Compensating controls such as restricted network path, secret vaulting, and monitoring
- Review cadence and explicit expiry date for the exception itself
NHIMG’s NHI Lifecycle Management Guide and Guide to the Secret Sprawl Challenge are useful reminders that accountability fails when credentials are treated as static configuration instead of living assets. The better operating model is to force review at issuance, at change, and at retirement, with logging that can prove who accepted the exception and who can revoke it. These controls tend to break down in legacy batch systems and vendor integrations because the application cannot rotate credentials without breaking production dependencies.
Common Variations and Edge Cases
Tighter control often increases operational overhead, requiring organisations to balance resilience against maintenance burden. That tradeoff is real for mainframe jobs, third-party SaaS connectors, and machine-to-machine integrations that still depend on long-lived secrets. Best practice is evolving, but current guidance suggests that exceptions should be temporary and tied to a migration plan toward dynamic credentials or workload identity.
Some environments also create shared accountability problems. For example, in managed service models, the platform owner may operate the credential store while the customer retains risk ownership. In those cases, the contract should state who can rotate, revoke, and attest to use. The same principle applies to service accounts used by automation: if no person owns the job, then no one owns the secret, and that is a governance gap, not just a tooling gap.
Where possible, teams should align non-expiring credential exceptions with identity lifecycle discipline and zero standing privilege goals, using Ultimate Guide to NHIs — Lifecycle Processes for Managing NHIs alongside the NIST SP 800-63 Digital Identity Guidelines for identity assurance discipline. In environments with uncontrolled secret sharing, such as ad hoc scripts or developer laptops, these controls lose effectiveness because the credential escapes the system of record before accountability is even assigned.
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, NIST SP 800-63, NIST Zero Trust (SP 800-207) 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 | Non-expiring secrets require explicit ownership and review. |
| NIST CSF 2.0 | PR.AC-4 | Access permissions must be managed and reviewed over time. |
| NIST SP 800-63 | Digital identity governance informs credential lifecycle accountability. | |
| NIST Zero Trust (SP 800-207) | AC-6 | Least privilege limits the damage from durable credentials. |
| NIST AI RMF | GOVERN 1.1 | Governance requires clear accountability for AI and automation assets. |
Constrain non-expiring credentials to the minimum access set and enforce continual verification.
