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Iran-Linked PLC Exploitation Expands Across US Critical Infrastructure

Apr 17, 2026 2:14:36 PM / by The Hivemind posted in Threat Bulletin, Iran cyber attacks, PLC exploitation, Iranian hackers critical infrastructure, Rockwell PLC vulnerability, Allen Bradley cyber attack, SCADA manipulation, water infrastructure cyber attack, OT cybersecurity threat

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Verticals Targeted: Critical Infrastructure, ONG, Electricity, Water, Government
Regions Targeted: US
Related Threat Actors: CyberAv3ngers, Static Kitten, Refined Kitten, Helix Kitten, Banished Kitten

Executive Summary

A joint US government advisory confirmed that Iran-affiliated cyber actors are actively exploiting internet-facing industrial control systems, particularly Rockwell Automation/Allen-Bradley PLCs, across US critical infrastructure. The activity has resulted in operational disruption, manipulation of HMI/SCADA data, and financial loss in sectors including water, energy, and government facilities. The campaign reflects a continuation of Iran’s established OT targeting playbook, prioritizing exposed industrial assets over sophisticated intrusion chains. Recent activity indicates a shift from defacement and signaling toward direct process interference, increasing the risk of real-world operational impact during periods of geopolitical tension.

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