Accountability should sit with the system owner, the identity governance team, and the operational leader responsible for the affected workflow. Manufacturing risk crosses IT and OT, so incident ownership must include both access governance and production continuity. Frameworks such as NIS2 and CMMC increase the need for clear responsibility.
Why This Matters for Security Teams
When a compromised identity disrupts manufacturing, the question is not just who misconfigured access. Accountability spans the system owner, identity governance, and the operational leader for the affected line because identity failures become production failures once credentials reach OT-connected assets. NHIs are often overprivileged and poorly inventoried, which is why incidents can spread faster than a normal account compromise. NHI Mgmt Group’s Ultimate Guide to NHIs notes that 97% of NHIs carry excessive privileges, increasing blast radius.
Manufacturing teams often assume the identity issue belongs to IT until a service account, API key, or certificate interrupts a production workflow. That delay matters because OT environments tend to have tighter uptime constraints and less tolerance for ad hoc access changes. The practical lesson is that accountability must be defined before the incident, not after the line stops. In practice, many security teams encounter identity-driven downtime only after production has already been disrupted, rather than through intentional ownership mapping.
How It Works in Practice
Operational accountability starts with a clear ownership chain for every non-human identity tied to manufacturing systems. The system owner is accountable for the business function, the identity governance team is accountable for lifecycle controls, and the operational leader is accountable for continuity actions such as failover, manual override, or safe shutdown. This is consistent with the control logic in the NIST Cybersecurity Framework 2.0, especially NIST CSF governance and access control outcomes, and with CISA Zero Trust Maturity Model principles that limit trust in any single credential.
In practice, teams should document:
- which identity supports which production asset or workflow
- who can revoke it during an incident
- what evidence triggers escalation from IT to OT leadership
- what fallback process keeps the line running safely if access is removed
For broader NHI governance, the NHIMG 52 NHI Breaches Analysis and Why NHI Security Matters Now both reinforce the same operational reality: leaked or overprivileged secrets can remain valid long enough to affect production, not just IT systems. Teams should pair that governance with real-time detection, short-lived credentials, and explicit incident playbooks for manufacturing downtime. These controls tend to break down when legacy OT systems depend on shared service accounts because ownership is diffuse and revocation can interrupt critical production dependencies.
Common Variations and Edge Cases
Tighter identity control often increases operational overhead, so organisations must balance resilience against uptime and maintenance constraints. In regulated manufacturing, that tradeoff becomes sharper because a fast revocation that is technically correct can still halt a line if no fallback has been approved.
There is no universal standard for exactly how accountability should split between IT, OT, and plant leadership, but current guidance suggests the incident commander must be the person who can both stop unsafe access and restore the workflow. If a compromised identity affects a supplier portal, robotics controller, or MES integration, ownership may extend outside the plant to third parties, especially where shared credentials or federated access are involved. The strongest approach is to preassign primary and secondary owners, define revocation authority, and rehearse the response path before a compromise occurs.
For AI-driven or autonomous manufacturing workflows, accountability becomes even more dynamic because the agent may chain tools or request access at runtime. In those cases, guidance from the Anthropic report on AI-orchestrated cyber espionage shows why fixed assumptions about safe behaviour do not hold. That is why incident ownership should include the business process owner, not only the identity administrators. The model fails when a single shared credential spans multiple plants or vendors because no one can revoke it without collateral disruption.
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 surface, NIST CSF 2.0 set the technical controls, and NIS2 define the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Ownership and visibility of machine identities are central to accountability in manufacturing. |
| NIST CSF 2.0 | GV.RR-01 | Governance roles and responsibilities define who owns incident response across IT and OT. |
| NIS2 | NIS2 heightens accountability expectations for resilient critical operations and incident handling. |
Document accountable owners for identity, operations, and recovery before manufacturing incidents occur.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 25, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
