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The Industrial Internet of Things (IIoT) have been designed to perform a more agile and efficient automation, control, and orchestration of future industrial systems while improving the energy efficiency in smart factories. Unfortunately, while the benefits of the IIoT are undeniable, their pervasive adoption as key enablers for future industries also paved the way for new security risks. In fact, the damaging effects of exploiting vulnerable IIoT have been repeatedly demonstrated and publicly reported. The Mirai botnet, various reports on hackable and invasive devices, alongside the infamous Stuxnet malware, constitute significant proof on the undisputed and disruptive effect of the malware-targeting IIoT systems. As a response, a plethora of solutions has been developed to address the issue of securing IIoT systems in specific sectors. Nevertheless, we believe that the gradual decay of the IIoT's physical dimension (e.g …