Who is accountable when zero standing privilege fails?

Why This Matters for Security Teams

zero standing privilege sounds straightforward until the control has to survive real operations: approvals, short-lived elevation, session isolation, and revocation all need to work together. If any link fails, standing privilege can reappear through bypass paths, mis-scoped roles, or stale sessions. That makes accountability a cross-functional control issue, not a single team’s checkbox. NHI Management Group’s guidance on the Ultimate Guide to NHIs — Key Challenges and Risks is clear that fragmented identity ownership is one of the fastest ways privilege controls drift out of policy and into exception.

This matters because ZSP is often treated as an access review problem when it is really an enforcement problem. IAM may define the role, PAM may broker the session, infrastructure may expose the runtime, and the application may still cache authorization decisions after privilege is revoked. The OWASP Non-Human Identity Top 10 frames this class of failure as an identity lifecycle and control-plane issue, not just a policy issue. In practice, many security teams encounter the failure only after an overprivileged session or secret abuse has already been used in production.

How It Works in Practice

Accountability for a failed ZSP program usually follows the control chain, not the org chart. IAM owners are accountable for entitlement design and approval workflows, PAM owners for elevation and session governance, platform or infrastructure owners for enforcement in the runtime, and application owners for making sure the app respects revocation and does not keep trusting old tokens or cached claims.

That distribution of ownership only works when the organisation defines one explicit control path for: request, approval, issuance, session binding, monitoring, and revocation. For non-human identities, the working assumption should be that privilege is temporary and workload-scoped, which aligns with NHI guidance and current industry practice rather than with legacy human-centric access models. The DeepSeek breach is a reminder that secrets, credentials, and backend exposure become shared failure points once they are reused across systems.

• Define one control owner for each stage of the ZSP chain, with clear handoffs and escalation paths.
• Require time-bound elevation, automatic expiry, and revocation testing, not just approved access.
• Verify that applications and services reject expired sessions and re-check authorisation after privilege changes.
• Measure drift between policy, PAM records, cloud entitlements, and actual runtime permissions.

Where possible, teams should pair ZSP with workload identity, short-lived credentials, and session-level logging so that accountability can be proven after the fact. Current guidance suggests that policy without enforcement telemetry is not enough for auditability. These controls tend to break down in distributed cloud environments with multiple identity stores and application-level caching because revocation can lag behind real privilege exposure.

Common Variations and Edge Cases

Tighter ZSP enforcement often increases operational overhead, requiring organisations to balance faster access recovery against stronger privilege containment. That tradeoff becomes more visible in high-change environments, where engineers, service accounts, and automation pipelines need frequent elevation.

There is no universal standard for accountability assignment in ZSP yet, but the most defensible model is shared accountability with a named control owner. Security leaders should avoid making IAM solely responsible when the failure may sit in PAM session handling, cloud role propagation, or application-side token validation. The right question is not who approved the access, but who owns each control that could fail to remove it.

In environments with third-party managed services, accountability can also split between the customer organisation and the provider contract. That is especially important where the provider controls the session broker or secret store, because the organisation still owns the risk even if it outsources the mechanics. The OWASP guidance on NHI exposure patterns helps teams identify where those ownership gaps typically appear.

Related resources from NHI Mgmt Group

• When should organisations prioritise Zero Standing Privilege for non-human identities?
• Why do NHIs complicate zero trust and least privilege efforts?
• What is Zero Standing Privilege (ZSP) and how does it apply to NHIs?
• Why do non-human identities complicate zero trust architecture?