What are PLCs and why are they targeted by Iranian hackers?

PLCs—programmable logic controllers—run factory automation, scanning sensors, executing code loops thousands of times a second. Hackers love 'em for control: flip a valve, halt a turbine. Exposed ones? Free lunch.

How can I check if my PLCs are internet-exposed?

Fire up Shodan.io, search 'port:44818' + your IP ranges. Or use CISA's free tools like Cyber Hygiene services. Clean house fast.

Will this lead to major U.S. blackouts from Iran?

Not tomorrow, but probable without action. They've probed; persistence pays. Air-gap or bust.

🌐 Nation-State Threats

Iranian Hackers Breach Exposed PLCs in U.S. Power Grids and Water Plants

Forget the headlines about nation-state hacks. Right now, Iran-linked crews are probing thousands of exposed PLCs in U.S. critical infrastructure. One wrong config, and blackouts follow.

theAIcatchup Apr 08, 2026 4 min read

Internet-exposed Allen-Bradley PLC in industrial control room with cyber threat overlay

⚡ Key Takeaways

Iran-linked APTs are exploiting default creds and CVEs in 2,700+ exposed U.S. Rockwell PLCs. 𝕏
This reverses Stuxnet dynamics: Iran now wields PLC sabotage against Western critical infrastructure. 𝕏
Fix it with segmentation, patching, and OT-specific monitoring—or face sabotage. 𝕏

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theAIcatchup

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#CISA FBI advisory #CISA advisory #Iran cyber attacks #Iran hackers #PLCs vulnerabilities #PLCs vulnerability #critical infrastructure

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Originally reported by SecurityAffairs

⚡ Key Takeaways

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