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TechRadar
TechRadar
Sead Fadilpašić

CISA says over 100 US water systems were targeted in July 2026 alone

CISA United States Internet
Aerial view of water treatment factory at city wastewater cleaning facility.
  • CISA warned of rising cyberattacks on US water systems, targeting 100+ exposed PLCs in July 2026
  • Attacks caused password changes, IP reassignments, boil water notices, and manual operations
  • Attribution uncertain, but reports suggest Iranian group; CISA urges removing PLCs from internet

CISA has warned of a “significant increase” in cyberattacks targeting US water systems, urging organizations to implement mitigations, strengthen their security posture, and make sure they’re resilient against these attempts.

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