Who should own SOC 2 access governance when machine identities are involved?

Why This Matters for Security Teams

SOC 2 access governance for machine identities is really an ownership problem disguised as a control problem. When a service account, API key, workload token, or agent identity has no clear business owner, reviewers default to security, and security teams become the bottleneck for approvals, attestations, and revocation. That breaks accountability and makes evidence harder to defend during audits.

NHI Management Group’s research on Regulatory and Audit Perspectives shows that auditors care less about who “manages” identities in theory and more about whether the control owner can prove review cadence, exception handling, and timely removal of unused access. That lines up with the NIST Cybersecurity Framework 2.0 emphasis on accountability and governance outcomes. In practice, many security teams encounter stale machine access only after a failed audit request, not through intentional review design.

How It Works in Practice

The best operating model is to assign ownership to the team that runs the system or workflow using the identity, with security setting policy and validating evidence. That owner should approve creation, confirm the least-privilege scope, review usage, rotate secrets or tokens, and revoke access when the workflow ends. For NHI-heavy environments, this aligns with the lifecycle control expectations described in Lifecycle Processes for Managing NHIs and the control concerns highlighted in the OWASP Non-Human Identity Top 10.

A practical SOC 2 control model usually includes:

• Named business or engineering owner for every machine identity.
• Documented approval path for issuance and privilege changes.
• Periodic recertification tied to system use, not calendar-only review.
• Rotation and revocation SLAs for secrets, keys, and certificates.
• Evidence of logging, exception approval, and removal of orphaned identities.

This model works because the owner understands the workflow dependency and can judge whether access is still needed. Security should define the review standard, monitor for drift, and escalate overdue actions, but it should not become the standing approver for every identity event. Current guidance suggests that centralized queues create delays and hidden exceptions, especially when teams have dozens or hundreds of service accounts across cloud and SaaS tools. These controls tend to break down when identity ownership is split across platform, application, and vendor teams because no single party can prove timely revocation.

Common Variations and Edge Cases

Tighter ownership controls often increase operational overhead, requiring organisations to balance auditability against delivery speed. That tradeoff is most visible when machine identities are shared across multiple applications, embedded in CI/CD pipelines, or managed by a third-party platform team.

There is no universal standard for this yet, but current best practice is to assign a primary owner and a backup approver, then require shared identities to have a documented control rationale. Vendor-managed identities are a special case: the internal system owner still needs to own the risk, even if a supplier provisions or rotates the credentials. For agentic workloads, the owner should be the team accountable for the agent’s task boundary and tool access, not the team that operates the underlying model. NHI Management Group’s 52 NHI Breaches Analysis and The State of Non-Human Identity Security both reinforce the same practical lesson: when ownership is vague, access persists long after the workflow changes.

The strongest SOC 2 posture is not “security owns everything.” It is “the operational owner owns the access decision, while security owns the framework, evidence, and escalation.”

Related resources from NHI Mgmt Group

• Who should own privileged access governance across humans and machine identities?
• Who should own just-in-time access governance for infrastructure identities?
• Who should own governance when human and machine identities overlap?
• Who should own access request governance across human and non-human identities?