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Threat Actors & CampaignsEmerging1 sourceJul 29, 2026 · 03:19via Tenable Blog

Coordinated "cyberattack" on U.S. water utilities: What you need to know

Brief

A coordinated cyber attack disrupted water and wastewater systems in at least 12 U. S. states, including more than 30 Minnesota communities. Here is what defenders need to know about the attack so far. This FAQ also details recent cyberactivity targeting internet-exposed PLCs, and how to protect exposed infrastructure.

Change log

Update August 10: Added Columbus Water Works as a second confirmed Georgia victim. Added a table summarizing publicly confirmed affected entities to date.

This is an active situation. Tenable's Research Special Operations team is monitoring developments and will update this FAQ as new information becomes available from federal agencies, state officials, and independent reporting.

Click here to review the change log history Update August 10: Added Columbus Water Works as a second confirmed Georgia victim.

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