A data diode is a unidirectional security device used to ensure safe, one-way communication between critical industrial networks and external IT systems. It physically enforces data flow in a single direction, preventing cyber intrusions while allowing necessary data transfers.

Data diodes are commonly deployed in industrial control systems (ICS), power grids, and military environments to protect sensitive infrastructure from cyber threats. They prevent external attacks while enabling secure data sharing with enterprise applications.

With increasing cybersecurity threats targeting OT environments, data diodes provide a reliable defense mechanism against malware infiltration, ensuring operational continuity and compliance with industrial cybersecurity regulations.