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

Summary: Researchers at Shandong University demonstrated TrojPix, a technique that modulates on-screen pixels imperceptibly so the video cable emits a faint radio signal a nearby receiver can decode, reaching a peak throughput of 8.1 Mbps and a distance of up to 208 meters, measured separately. The method requires user-level malware already on the target, needs no administrator rights or hardware changes, and was reported working across nine monitor brands and fifteen video cables.
What's compelling: At roughly a megabyte a second, TrojPix could move a 100 MB file in under two minutes, turning an air-gap leak from a stolen password into whole-file exfiltration while the monitor appears switched off. The emission itself cannot be patched, so the practical control is keeping malware off the machine in the first place.

Read the original at The Hacker News ↗