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Why US Water Systems Are Vulnerable to Foreign Cyberattacks

Federal agencies said attackers accessed water-system controls in at least seven states, prompting manual operations and boil-water advisories in some areas.

  • On Wednesday, CBS News reported cyberattacks on U.S. water systems in at least a dozen states, with officials suspecting Iran-backed hackers orchestrated the campaign targeting critical infrastructure across multiple regions.
  • The FBI disclosed Thursday that cyber actors breached water and wastewater utilities across at least seven states during a four-day window, disabling remote monitoring and operational controls at targeted facilities.
  • Minnesota saw more than 30 systems compromised, while Georgia's Clayton County Water Authority, serving 300,000 customers in the Atlanta area, issued a boil water advisory following cyber disruptions last month.
  • On Friday, President Trump blamed Minnesota Gov. Tim Walz for the utility attacks, calling the 2024 Democratic vice presidential nominee "corrupt," while Walz countered that the incidents demonstrate "modern warfare."
  • Security experts cautioned that modest protections make facilities "vulnerable" to state-sponsored intrusions, though officials noted many sites retain manual backup operations allowing disconnection from internet networks if needed.
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The vulnerability of U.S. critical infrastructure has been exposed. Sources familiar with ongoing federal research informed CBS News that treatment and water plants in at least a dozen states have been targeted by cyberattacks. Official investigators' suspicions point in advance to hacker groups supported by the Iran regime. Among the entities affected by this wave of intrusions are Michigan, Minnesota, Georgia, New Jersey and South Dakota.

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The Hill broke the news in Washington, United States on Wednesday, August 5, 2026.
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