“Malicious cyber actors” have attacked municipal water systems in at least seven states, the FBI said.A cyberattack targeted the operating technology at over 30 water systems in Minnesota last week, including Plymouth's, state officials said. Ellen Schmidt / APAug. 4, 2026, 12:41 PM EDTIran was likely behind a wave of recent cyberattacks on municipal water systems across the U.S., two people familiar with the incidents told NBC News, as officials in metro Atlanta said they were investigating “unauthorized cyber activity” that may have disrupted water operations.Just a moment.We are getting your experience ready.