In brief: CISA warns of Iranian hacker access to control systems across at least 30 water utilities in Minnesota.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has warned of a wave of attacks against at least 30 municipal water utilities in Minnesota, with Iranian hackers gaining access to control systems and being attributed for the attacks.
CISA has observed a campaign targeting water utilities that are central to the nation’s critical infrastructure. The affected entities are primarily municipal water supply companies in Minnesota, totalling more than 30 facilities. The attackers gained access to control systems necessary for the operation of supply networks.
CISA attributes the attacks to Iranian hackers, though no specific names or groups are mentioned. This marks another incident in which state-sponsored actors have targeted U.S. water infrastructure. Such attacks on control systems (ICS/SCADA systems) pose a significant risk, as they can endanger the operation of critical services.
For Chief Information Security Officers, this is an indicator that critical infrastructure remains under pressure. CISA’s warning is expected to provide water utility operators with guidance on hardening their systems and detecting intrusions that may have already occurred, to prevent further attacks.
Source: www.golem.de · Published August 2, 2026
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