I&#x27;m aware.<p>We do regular security audits from a security firm who goes the extra mile to try and social engineer and gain physical access to all of our sites.<p>Plus we&#x27;re talking about things like processing fish in a town of 2,000 people.  If I was operating a nuclear reactor, I would surely adapt better security measures.. although against government sponsored attacks using undocumented vulnerabilities, windows update isn&#x27;t really going to do much.<p>The Target thing you posted has to do with internet access, which is something that goes against what I was saying. I&#x27;m talking about closed, physically secure networks, possibly not even using tcp&#x2F;ip or ethernet.