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FBI/CISA joint advisory on PLC targeting

Public Sector Action
First reported
Last updated
Happening score
H score 38
2 unique sources, 2 articles

Summary

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The FBI, CISA, NSA, EPA, DOE, and CNMF issued a joint advisory warning U.S. critical-infrastructure defenders about Internet-exposed Rockwell/Allen-Bradley PLCs. The agencies said the activity has caused financial losses and operational disruptions across multiple sectors since March 2026. The advisory also tells operators to disconnect PLCs from the Internet, harden access, and review logs for suspicious OT activity.

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Timeline

  1. 07.04.2026 21:02 2 articles · 3mo ago

    US agencies issue PLC-targeting advisory

    Initial Disclosure

    FBI, CISA, NSA, EPA, DOE, and CNMF issued a joint advisory warning U.S. critical-infrastructure organizations that Iranian-linked hackers were targeting Internet-exposed Rockwell/Allen-Bradley programmable logic controllers (PLCs) on OT networks, including Government Services and Facilities, Water and Wastewater Systems, and Energy sectors; the advisory says the campaign caused financial losses and operational disruptions since March 2026 and involved extraction of device project files plus manipulation of HMI and SCADA display data.

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