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A guide to securing industrial control networks — (IT/OT) convergence

Since the introduction of the computer and increasingly more so with the addition of the internet, there has been the threat of hackers and viruses attacking these systems. This assault has been focused primarily on the front facing Information Technology systems, however, with connectivity advancements related to plant floor networks and as we move closer to a globally connected enterprise, security of the industrial control network must consider all levels of the system including Operations Technology. This paper will discuss the current industrial situation as well as the practices which should be adopted to provide the necessary security, policies that provide flexibility to the users so to ensure productivity and further insight to developers who are building new security solutions and products.