Fend’s low-cost, ruggedized data diodes protect critical infrastructure by physically blocking cyberattacks while providing access to vital data. Fend’s technology optically isolates the protected equipment while enabling local or cloud communication for monitoring and analytics. Tested by the U.S. Army, Navy, and National Cyber Range and used by water, wastewater, and electric utilities, Fend provides nuclear power plant protection at a price point that supports mass deployment.