Inside Enterprise HMI SSO: Architecting OAuth 2.0 and OIDC for SCADA Security
HMI%%{init: {'theme':'dark', 'themeVariables': { 'background': '#001c38' }}}%%
flowchart LR
A[Operator] -->|Auth Request| B(OIDC Provider)
B -->|ID Token + Access Token| C{SCADA HMI}
C -->|API Calls| D[Historian / PLC]
style A fill:#003c71,stroke:#fff,stroke-width:2px,color:#fff
style B fill:#0055a4,stroke:#fff,stroke-width:2px,color:#fff
style C fill:#0072ce,stroke:#fff,stroke-width:2px,color:#fff
style D fill:#4a90e2,stroke:#fff,stroke-width:2px,color:#fff
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Inside Enterprise HMI SSO: Architecting OAuth 2.0 and OIDC for SCADA Security
Historically, securing industrial control systems meant relying on isolated networks and shared generic credentials like “Operator1” or “Admin”. However, as IT/OT convergence accelerates, this perimeter-based security model is no longer sufficient. To achieve true Zero Trust architecture in modern industrial environments, engineers must move toward centralized identity management. Implementing SCADA HMI SSO OAuth 2.0 and […]
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