Implementing Zero Trust Networking for OT and Industrial Control Systems

Zero trust is no longer optional for industrial environments. With IT and OT networks increasingly connected, the old “air gap” security model has become a liability rather than an asset.

Core Principles We Apply

Every device, user, and service must prove its identity and authorization continuously. We never trust a connection simply because it originates from the plant floor VLAN.

• Strong identity for every PLC, HMI, and engineering workstation
• Micro-segmentation using software-defined firewalls that understand industrial protocols
• Just-in-time access for vendors and integrators with full session recording
• Continuous verification of firmware versions and configuration drift

The biggest surprise for most teams is how much visibility they gain once they stop relying on the network perimeter as the primary control.