FBI and EPA warn of MicroLogix PLC attacks on water utilities

The FBI and EPA issued joint advisory I-073026-PSA on a campaign against water and wastewater systems targeting Rockwell Automation and Allen-Bradley MicroLogix 1100 and 1400 controllers. Incidents reported since 27 July across at least seven states involved changed passwords, IP addresses and ladder logic, causing pressure loss and flooding. The EPA announced $11.75 million in grants for water infrastructure resilience.

• Targets were Rockwell Automation and Allen-Bradley MicroLogix 1100 and 1400 PLCs
• Incidents since 27 July in at least seven states caused pressure loss and flooding
• Attackers changed passwords, IP addresses and ladder logic on controllers
• EPA directed $11.75 million to 10 water resilience projects in six states