This Blue Ridge Networks white paper outlines cyber resilience strategies for water and wastewater utilities, stressing the urgency of protecting critical infrastructure from growing cyber threats. It reviews evolving regulations, air-gap limitations, and the risks of aging systems. The paper introduces Zero-Breach solutions—based on ISA/IEC 62443 and Purdue models—to secure OT environments through segmentation, policy-based controls, and public-key trust. It recommends asset assessments, real-time breach prevention, and scalable security tailored to both large and small utilities for long-term protection.

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