Your HDMI Cable Leaks Your Screen: TempestSDR and AI-Enhanced Deep-TEMPEST Attacks

haydendevs · x · 2026-11-09

HDMI connections leak radio signals that can be picked up with an antenna and a HackRF, then reconstructed into recognizable screen footage using TempestSDR software — meaning a wired connection still leaves a wireless trace.

Researchers pushed this further with Deep-TEMPEST, applying AI to make recovered images and text easier to read. Reconstruction quality depends on shielding, distance, and interference, but identifiable content still gets through.

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