TrojPix lets malware exfiltrate gigabytes from air‑gapped PCs via HDMI cable emissions
Researchers at Shandong University introduced TrojPix, a covert channel that modulates imperceptible pixel values to turn ordinary video cables into radio antennas, achieving 8.1 Mbps over distances up to 208 m. The method requires only user‑level code, no hardware changes, highlighting a new high‑speed breach vector for isolated systems.