The organisation that depends on the automation should own lifecycle control, not the individual who first created the token. That means clear responsibility for issuance, expiry, revocation, and repository scope, with those controls reviewed alongside the workflow itself.
Why This Matters for Security Teams
Machine credentials used in CI pipelines and scripts are not personal assets, even when an engineer created them first. They are operational controls tied to a workflow, a service, and a business outcome. That distinction matters because lifecycle ownership determines whether expiry, rotation, revocation, and scope changes happen on time or linger until a compromise forces the issue.
Current guidance across the OWASP Non-Human Identity Top 10 and NHIMG research on NHI Lifecycle Management Guide points to the same operational reality: lifecycle control must sit with the organisation that depends on the automation, because that team can see when the workflow changes, when access is no longer required, and when a credential must be retired. In practice, many security teams encounter overexposed tokens only after a repository leak or offboarding event has already made ownership ambiguous.
How It Works in Practice
The cleanest operating model is to assign lifecycle ownership to the service or product team that consumes the automation, while central security sets policy, minimum controls, and review requirements. That owner is accountable for issuance requests, approved scope, expiry, renewal, and revocation. Platform teams typically implement guardrails, but they should not become the sole custodian of business context.
For CI and scripts, the workflow should define the credential, not the individual. A practical pattern is to bind each token or key to a named workload, repository, or environment, then manage it through documented lifecycle events: creation, periodic attestation, automatic expiry, and immediate revocation when the pipeline is retired or permissions change. NHIMG’s research on the Guide to the Secret Sprawl Challenge highlights why this matters: duplicated secrets and uncontrolled distribution turn one forgotten token into many.
Effective ownership also means integrating lifecycle checks into the delivery process:
- Issue credentials through a controlled request path, not ad hoc by individuals.
- Use short TTLs where the workflow supports them, and require renewal only after review.
- Store secrets in approved systems, with repository scanning and automated revocation on detection of exposure.
- Review access when the script, pipeline, or upstream dependency changes.
- Record a business owner and a technical owner so accountability survives staff turnover.
For identity and access design, the OWASP guidance and the NIST SP 800-63 Digital Identity Guidelines reinforce a simple principle: identity assurance is only useful if it is paired with clear governance over credential binding and revocation. These controls tend to break down when credentials are shared across multiple pipelines and no single team owns the underlying automation.
Common Variations and Edge Cases
Tighter lifecycle control often increases coordination overhead, requiring organisations to balance speed of delivery against the cost of approval, review, and automated rotation. That tradeoff is real, especially in CI environments that rely on many short-lived jobs, third-party integrations, or legacy scripts that were never designed for managed secrets.
Best practice is evolving, but current guidance suggests three common exceptions need special handling. First, centrally managed platform tokens may be owned by an infrastructure team if they serve a shared control plane, though the consuming application team should still own usage approval. Second, some legacy scripts cannot tolerate frequent rotation, so the migration plan should prioritise replacement rather than indefinite exceptioning. Third, service accounts used by multiple repositories need explicit scope boundaries, because shared credentials blur accountability and increase blast radius.
NHIMG’s Ultimate Guide to NHIs — Static vs Dynamic Secrets is useful here: static credentials are sometimes unavoidable, but they should be treated as temporary technical debt, not the default ownership model. A mature program also tracks revocation triggers such as repository deletion, pipeline decommissioning, vendor change, and role change in the owning team. If those triggers are not defined up front, responsibility usually gets pushed into security operations after an exposure has already occurred.
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 SP 800-63 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Covers secret lifecycle ownership, rotation, and revocation for machine identities. |
| NIST CSF 2.0 | PR.AC-4 | Addresses access control governance for non-human credentials and least privilege. |
| NIST SP 800-63 | AAL | Identity assurance principles support controlled issuance and revocation of credentials. |
Treat credential issuance as an assurance decision and require revocation-ready ownership for each workflow.
