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Coordinated "cyberattack" on U.S. water utilities: What you need to know
July 29, 2026 · Tenable Blog · Severity: HIGH
This FAQ details a coordinated cyberattack on US water utilities that impacted at least 12 states. It covers operational effects, attack indicators, and defensive measures for exposed infrastructure. Attribution is pending investigation, but ties to Iranian-related PLC exploits are noted.
Key Takeaways
- Coordinated cyberattack disrupted water systems across 12 US states, including 30 Minnesota communities.
- FBI identified targeted PLC models and reported operational impacts like pressure loss and flooding.
- Timing aligns with Iranian-affiliated PLC exploitation activity detailed in CISA Advisory AA26-097A.