Rail infrastructure is the physical and digital foundation that keeps trains moving: tracks, switches, signals, control centers, sensors, maintenance systems, and the software used to schedule and dispatch freight. In cyber security, it is treated as critical operational technology because a compromise can affect safety, availability, and supply chains, not just data. Even a small disruption can delay cargo, confuse operators, or force manual fallback procedures.
Attackers may target rail infrastructure with phishing, stolen credentials, ransomware, or direct access to poorly segmented networks. The goal is often to disrupt operations, hide tampering, or force costly downtime. Defenders reduce risk with network segmentation, strong authentication, asset inventory, logging, patch management, backups, and strict separation between business IT and safety-critical systems. In practice, protecting rail infrastructure means protecting the process as much as the equipment.