Coordinated Cyberattack Hits 30+ Minnesota Water Utilities

Minnesota water systems hit by cyberattack; state and federal agencies investigate Iran-linked suspects. Drinking water remains safe.

By Content Team

Jul 29, 2026

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More than 30 Minnesota community water systems were hit in a coordinated cyberattack on July 26–27, targeting operational technology (OT) systems across cities including Plymouth, Braham, South St. Paul, and Maple Plain. Automated control functions were disrupted, and Braham briefly took its water plant offline after attackers shut down well and treatment plant controls.

State and federal agencies are investigating, though no group has been officially blamed. Iran-linked threat actors remain suspects given recent US warnings about attacks on industrial control systems. Security experts flagged cellular communication links to remote assets like pump stations as the likely attack vector — a known blind spot in infrastructure security. Drinking water remains safe across all affected cities.

Source: SecurityWeek

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