During my visits to industrial plants that contain numerous industrial control systems and SCADA systems (ICS) operating within segmented and protected OT networks, the question often arises among plant personnel whether it is advisable to move data to the cloud or remain in an on-prem configuration. Since these industrial plants are designed to generate profit, I do not find it appropriate to restrict them or prevent cloud adoption solely for cybersecurity reasons. My approach is to enable the business and support cloud migration when it demonstrates profitability, but to do so with great caution, implementing appropriate security measures to address cybersecurity concerns and the exposure surfaces identified throughout the cloud-migration project.
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