Industrial Cybersecurity and Resiliency

The challenge

OT networks carry safety-critical traffic, so security controls cannot interfere with control communication.

The operator had limited visibility into what was actually happening on the industrial network.

The approach

• Designed network segmentation and a DMZ aligned to IEC 62443 and Purdue model boundaries.
• Applied a zero-trust posture to traffic between zones rather than trusting the flat network.
• Deployed passive monitoring that surfaces anomalies without injecting load into control traffic.
• Built fault-tolerant topology so a single failure does not take down visibility or control.

The outcome

• A defensible, standards-aligned OT architecture.
• Real-time anomaly visibility for operators and security teams.
• Resilience designed in, not bolted on after an incident.

Stack