Tip of the Week – August 20, 2026

Review Network Segmentation

Separating operational technology (OT) from business IT networks can help limit the impact of a cyberattack. Water utilities should periodically review firewall rules, network connections, and pathways between IT and OT environments to confirm that only necessary communications are permitted. Strong network segmentation can prevent an attacker who compromises an IT system from easily reaching critical control systems and PLCs.

Resource(s): CISA’s Layering Network Security Through Segmentation