Now, after an unprecedented wave of disruptive cyberattacks hit water utilities in Minnesota, a memo circulated within the water industry ties those attacks to Iran, too, in the widest and most disruptive strike yet inflicted by the country’s hackers against the US since the war began. A communication obtained by WIRED on Thursday and sent to members of the Water Information Sharing and Analysis Center, or WaterISAC, an industry group for water utilities to share cybersecurity information, links to Iran a series of cyberattacks that targeted dozens of Minnesota water and wastewater utilities. (Both the WaterISAC and Minnesota Fusion Center reports were marked as unclassified but “for official use only.”) Slowik adds that there’s no reason to believe that the attacks would stop with the incidents in Minnesota. The latest CISA advisory notes that the attacks have, however, “resulted in boil-water notices”—suggesting fears of water contamination— and “sustained manual operations.”