VPN Is the Biggest Backdoor Into Your Plant — Here’s What Should Replace It on Your OT Network

Every industrial organisation now lets someone in from the outside — OEM vendors, system integrators, remote engineers. How they get in determines whether a plant’s biggest convenience becomes its biggest breach path. Operational technology (OT) environments were designed to be isolated. IT/OT convergence ended that: industrial control systems (ICS), SCADA servers, PLCs, and HMIs are now reachable across networks because efficiency, analytics, and remote maintenance demand it. That maintenance is rarely done by the plant’s own staff alone. OEMs service their turbines and robots under warranty, system integrators tune SCADA applications, and in-house engineers troubleshoot from home at 2 a.m. Third-party remote access is no longer an exception granted reluctantly it is a permanent operating requirement of modern industrial environments. It is also the front door attackers prefer. Remote access pathways leaked VPN credentials, exposed remote desktop services, vendor connections have…