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.
Because of the criticality of remaining operational, industrial companies and utilities are far more likely to pay, attracting even more threat groups and a focus on OT systems.
Despite a focus on the future, there's no indication of how well the cybersecurity basics needed to stay safe are being applied.
A set of 21 newly discovered vulnerabilities impact Sierra OT/IoT routers and threaten critical infrastructure with remote code execution, unauthorized access, cross-site scripting, authentication bypass, and denial of service attacks. [...]
There's a war on and critical infrastructure operators are still using default passwords Iran-linked cyber thugs have exploited Israeli-made programmable logic controllers (PLCs) used in "multiple" water systems and other operational technology environments at facilities across the US, according to multiple law enforcement agencies .…
Multiple agencies warn that attackers have been active since Nov. 22, targeting operational technology (OT) across the US.
Multiple agencies warn that attackers have been active since Nov. 22, targeting operational technology (OT) across the US.