CISA warns of spike in attacks on water systems as Minnesota incidents probed
CISA issued a public alert warning of a rise in cyberattacks targeting water and wastewater systems, urging facilities to take programmable logic controllers and other operational technology offline from public internet access. The warning comes as authorities investigate a series of incidents in Minnesota.
Why this matters: Water systems are critical infrastructure with direct physical consequences when they fail. A compromised PLC does not just leak data — it can change chemical levels, pressure, or flow in ways that affect public health. The core problem CISA is flagging is basic: industrial equipment that controls physical processes should not be reachable from the open internet. The fact that it still is, widely enough to prompt a federal alert, means the people responsible for these systems have been slow on a very obvious fix.
Who should care: Cybersecurity · Privacy officers · Administrators
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