Operational Technology controls physical processes, so cyber risks can disrupt safety, reliability, and availability across connected industrial systems.
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Background for this topic.
Operational technology (OT) comprises hardware and software that monitor and control physical processes—such as PLCs, RTUs, HMIs, SCADA, and DCS—in manufacturing, utilities, transport, and buildings. Its assets include controllers, sensors, actuators, engineering workstations, and the networks linking them. OT depends on precise timing, reliable communications, and safe states; outages or incorrect commands can stop production or affect physical safety, even when little sensitive data is involved.
Security concerns arise where OT connects to enterprise networks, vendor remote-access paths, or internet-facing services. Legacy protocols and long-lived devices may lack authentication, encryption, logging, or practical patching options. A compromise could alter setpoints, inhibit alarms, or disrupt availability, but impact depends on process design and safeguards. Defenders typically segment control networks, restrict and monitor remote access, maintain asset and dependency inventories, use passive monitoring where active scanning is risky, and test recovery and safe manual operation. Vulnerability management must account for maintenance windows, vendor support, and safety validation rather than treating every patch like IT.
Zero Trust Is 'Essential' - But Who Pays for It?New guidance from the U.S. Cybersecurity and Infrastructure Security Agency on adapting zero trust security principles for operational technology is fine as far as it goes, but is pretty high-level and ignores or fudges a couple of key questions, say executives and experts.
Exclusion of OT From AI-Powered Vulnerability Discovery Poses Risks to National SecurityHyperscalers and IT behemoths are on the list, while OT companies are not. The list in question includes the companies that have special access to powerful new models from the two major U.S. frontier AI labs to identify vulnerabilities before hackers get access to similar technology.