Who should be accountable for rotating and revoking machine credentials?

The identity owner and the system owner should both be accountable, with clear deadlines for rotation, revocation, and decommissioning. If ownership is ambiguous, credentials tend to survive by default. Accountability works only when the lifecycle state of each identity is tracked and enforced.

Why This Matters for Security Teams

Rotating and revoking machine credential is not just an access hygiene task. It is a control over blast radius, auditability, and post-incident containment. When the same secret lives across code, CI/CD, containers, and tickets, no single team sees the full lifecycle. That is why accountability must sit with both the identity owner, who understands what the credential is for, and the system owner, who controls where it runs. Current guidance from the OWASP Non-Human Identity Top 10 and NIST SP 800-63 Digital Identity Guidelines supports explicit ownership, lifecycle control, and traceable revocation rather than shared assumptions.

That matters even more because secrets tend to spread. NHIMG’s Guide to the Secret Sprawl Challenge shows how credentials outlive their intended purpose when they are copied into scripts, pipelines, and chat threads. In the same vein, the Guide to NHI Rotation Challenges shows that rotation fails most often when nobody owns the cutover. In practice, many security teams discover stale machine access only after a breach review or failed decommissioning, rather than through intentional lifecycle governance.

How It Works in Practice

The cleanest operating model assigns joint accountability, but not joint confusion. The identity owner defines the credential purpose, approved use, rotation cadence, and revocation triggers. The system owner ensures the secret is actually removed from workloads, images, vault references, and dependent services before the deadline expires. In other words, one team owns the identity record and policy; the other owns the runtime environment and dependency removal. That split aligns with the lifecycle discipline described in NHIMG’s NHI Lifecycle Management Guide.

Practical accountability usually includes four controls:

• A named owner for every non-human identity, with backup approvers for leave and escalation.
• A ticketed deadline for rotation, revocation, and decommissioning, tied to change management.
• Vault-backed secrets with short TTLs, so revocation is a policy action, not a scavenger hunt.
• Evidence of completion, including service validation and dependency checks, before closure.

This approach is consistent with the direction of the NIST Zero Trust Architecture model: do not assume a credential remains safe after issuance, and do not rely on perimeter trust to compensate for stale secrets. For operational teams, the real goal is to make revocation mechanically verifiable, not merely policy-approved. These controls tend to break down in hybrid estates where legacy applications cache secrets locally and cannot reload credentials without a restart, because ownership of the app runtime and ownership of the secret are often split across different teams.

Common Variations and Edge Cases

Tighter rotation and revocation controls often increase operational overhead, requiring organisations to balance security gain against deployment friction. That tradeoff is most visible in long-lived service accounts, vendor integrations, and embedded devices, where frequent secret changes can break availability if dependencies are not designed for reload. Current guidance suggests this is a process issue, not a reason to avoid ownership; it simply means the ownership model must include rollback, maintenance windows, and technical validation.

There is also no universal standard for every environment. Some teams use shared platform ownership for centrally managed workloads, while others keep application teams accountable for their own credentials. The key is that “shared” still means explicitly assigned, not ambiguous. For broader context on how static credentials become a liability, NHIMG’s Ultimate Guide to NHIs — Static vs Dynamic Secrets is a useful reference, especially when paired with the Top 10 NHI Issues. For organisations with machine-to-machine trust chains, the right answer is often to move from standing secrets to ephemeral issuance, but accountability for revocation still remains with the same named owners. Where that breaks down is in organisations that treat platform teams as a ticket queue rather than a control owner, because then no one is accountable when a credential survives decommissioning.

Related resources from NHI Mgmt Group

• Who is accountable for revoking unused machine identities?
• Who should be accountable for machine identity assets that have no clear owner?
• Who is accountable when inherited NHI credentials remain active after a merger or acquisition?
• Who is accountable when exposed machine secrets are found in a public repository or portal?