Water utility cyber incidents across at least seven U.S. states disrupted monitoring and control across at least seven U.S. states
CBS News, NBC News, and CNN Newsource via KEYT reported that the FBI and EPA said water and wastewater utilities in at least seven U.S. states experienced malicious cyber incidents, with some activity degrading operations. The reporting says the activity targeted internet-facing programmable logic controllers, or PLCs, which utilities use to monitor and control equipment such as pumps, valves, pressure and chemical processes.
Those outlets reported that more than 30 Minnesota community water systems were affected. Some utilities temporarily shifted to manual operations, and reported impacts included loss of monitoring or control; some accounts also described pressure-related disruption. The supplied reporting says no contamination of Minnesota water supplies had been reported.
CBS News and NBC News said CISA urged operators to remove publicly exposed PLCs and other OT from the internet, secure necessary external connections, strengthen passwords, and review access controls. CBS News and CNN Newsource via KEYT also reported that U.S. investigators were examining possible Iranian involvement, but no formal attribution had been made.
Sources
- CBS News: U.S. investigating if Iran was behind cyberattack on water systems in 7 states, including Minnesota
- NBC News: Hackers targeted municipal water systems in 7 states this week, FBI says
- CNN Newsource via KEYT: Sweeping cyberattack on water systems in multiple states has US officials on edge
- TMJ4 / Scripps Media: Cybersecurity expert explains cyber threats facing Wisconsin water systems