It&#x27;s disingenuous to suggest that the solution is simply keeping them off the internet. Their own proprietary network cables&#x2F;radio comms can be spliced into and reverse engineered when running through public places. Low-level employees can be tricked into plugging in flash drives (i.e. Stuxnet).<p>When you&#x27;re building a target, security aneeds to be designed for across the board. If you want to shortcut your way out of that, don&#x27;t use general-purpose operating systems and don&#x27;t build networks.