Tag

#water-utilities

2 stories tagged water-utilities.

CISA alert: PLC attacks on water utilities escalate

PLC attacks on water utilities by Iranian APTs triggered a CISA alert after attackers locked operators out and caused boil water notices across the US.

Lars Cornelissen · Aug 1, 2026

Bar chart of internet-exposed industrial controller hosts: Rockwell Automation/Allen-Bradley at 4,100, Siemens at 4,100, Schneider Electric at 2,000. Source: Censys.

Cyber security

Coordinated PLC attacks hit water systems in 7 states

PLC attacks on water utilities spread to 7 states after 30 Minnesota systems were hit. CISA says remove exposed controllers from the internet now.

Lars Cornelissen · Aug 1, 2026