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Iran-Linked Attack Prompts Michigan Water Utilities Password Changes

8/13/2026

Summary

Story summary

A July cyberattack forced Michigan water-treatment facilities to change passwords.
The breach prompted boil-water notices and limited IP access to known laptops.
Cybersecurity and Infrastructure Security Agency (CISA) issued a July 30 alert urging water utilities to remove operational technology from the internet.
Senator Elissa Slotkin (D-MI) said intelligence points to Iran as the attacker, while President Donald Trump blamed Governor Tim Walz for a separate Minnesota utilities attack.

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Story summary

A July cyberattack forced Michigan water-treatment facilities to change passwords.
The breach prompted boil-water notices and limited IP access to known laptops.
Cybersecurity and Infrastructure Security Agency (CISA) issued a July 30 alert urging water utilities to remove operational technology from the internet.
Senator Elissa Slotkin (D-MI) said intelligence points to Iran as the attacker, while President Donald Trump blamed Governor Tim Walz for a separate Minnesota utilities attack.