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A Leaked Memo Ties Cyberattacks on Minnesota Water Utilities to Iran

ID: 17a0669a-f132-5bd9-9472-ea73bc718f86

STIX ID: report--17a0669a-f132-5bd9-9472-ea73bc718f86

Feed Name: WIRED Security

Threat Score
90/100

Date Published: 2026-07-30

Date Updated: 2026-07-31

Author: Andy Greenberg

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### Executive summary A reported campaign of cyber intrusions affected over 30 Minnesota water and wastewater utilities, disrupting PLC/ICS communications, prompting boil-water notices and manual operations; industry and government notifications (WaterISAC, Minnesota Fusion Center, CISA) link the activity to Iran-affiliated threat actors such as CyberAv3ngers and urge ICS hardening and network segmentation.

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