New TrojPix Attack Leaks Data From Air-Gapped Systems via Video Cable Emissions

Researchers at Shandong University have shown a fast new way to pull data off computers that are cut off from every network. The technique, called TrojPix, tweaks on-screen pixels in ways the eye cannot see, so that the video cable carrying them radiates a faint radio signal a nearby receiver can decode.

But TrojPix works only once malware is already on the target machine, so it