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Training Camp • Cybersecurity Glossary
The Controller Area Network CAN bus links vehicle and industrial ECUs over ISO 11898; lacking native authentication, it is a key automotive and OT security focus.
CAN Bus Definition: The Controller Area Network CAN bus links vehicle and industrial ECUs over ISO 11898; lacking native authentication, it is a key automotive and OT security focus.
The Controller Area Network (CAN) bus is a robust serial communication standard, originally developed by Bosch and standardized as ISO 11898, that lets microcontrollers and electronic control units in vehicles and industrial machinery exchange messages without a host computer. Its design prioritizes reliability and real-time performance but lacks built-in authentication and encryption, so any node on the bus can read or inject broadcast frames. This makes CAN bus security a key concern in automotive and OT environments, addressed through gateways, segmentation, intrusion detection, and message authentication overlays.
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