How Zero Trust Can Protect a PLC That Cannot Authenticate | CUP Focus

A legacy PLC cannot suddenly gain modern identity controls. This CUP Focus explains how identity-aware proxies can mediate access, translate trusted sessions into legacy protocols and restrict which commands reach the controller. Format: CUP Focus, a self-contained section from the Cybersecurity Under Pressure archive. Related CUP episodes: Industrial Identity Security: The Risk in Software-Defined Factories Zero Trust in Legacy OT: Working With Twenty-Year-Old Systems Zero Trust in OT: Secure Access Beyond the HMI Zero Trust for Brownfield OT: Working Within Legacy Constraints