Legacy PLCs might still keep the lights on—but beneath the surface, they represent one of the largest cybersecurity blind spots in industrial operations today. These devices were never designed with modern threat actors in mind. They often lack basic protections like user authentication, encrypted communications, or firmware integrity checks. Once a system becomes unsupported by the manufacturer, you’re operating without updates, patches, or a safety net.
This makes legacy PLCs an open invitation for attackers. Exploiting known vulnerabilities in outdated firmware, bad actors can gain control over field devices, manipulate data, or even shut down your operation entirely. And because these PLCs often sit behind the scenes, they’re frequently overlooked in cybersecurity strategies—until it’s too late.
At Koniag Energy & Water, we specialize in modernizing outdated PLC systems while minimizing disruption. Whether you’re replacing hardware or migrating software, we ensure each upgrade strengthens your security posture, not just your process logic. With our team’s decades of experience across Alaska’s most complex industrial environments, we help you reduce risk and prepare for what’s next.