CISA urges water utilities to take exposed systems down after Minnesota hacks
Robert Alexander/Getty Images
ByDavid DiMolfetta,
Cybersecurity Reporter, Nextgov/FCW
July 31, 2026 09:51 AM ET
A memo distributed to water industry members and obtained by Nextgov/FCW makes mention of Iran but does not directly present evidence attributing the latest Minnesota incident to the country.
Following coordinated cyberattacks on Minnesota water systems that officials suspect may be linked to Iran, the Cybersecurity and Infrastructure Security Agency on Thursday warned utilities nationwide to remove exposed industrial-control equipment from the internet, citing a surge in activity that has locked operators out, disrupted facilities and triggered boil-water notices.
The Minnesota hacks targeted technology used by more than 30 community water systems on Sunday and Monday, state officials said. Some utilities were forced to operate equipment manually, while an intrusion in Brahambriefly knocked out controls for the city’s well and water treatment plant. Officials said they had...
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