Question on PLC vulnerability from Iran

November 19, the following thread was in Linked-in Cyber Security in Real-Time Systems. "I found that there is a vulnerability in Image-Memory of PLCs. Ralph lunger (sic) said in a movie." the vulnerability is read and write capability in Memory of PLC ". Is there that vulnerability now?"

The question was raised by ‘Hassan Kh R engineer at control system Iran' and answered by a "Western" expert. Several months ago, an Iranian engineer wrote an article on Stuxnet and Anti-Virus that was published in Control magazine (previous blog). Is there any doubt that Iran is actively studying cyber vulnerabilities of control systems? One might ask why the US electric industry isn't asking the same questions.

Joe Weiss

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