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The Register
Network interface card LEDs are a risk too by blinking in Morse code An Israeli security researcher known for foiling air gap security measures has published a reminder of just how vulnerable the approaches are to both visual and ultrasonic threats. …
The Hacker News
A novel data exfiltration technique has been found to leverage a covert ultrasonic channel to leak sensitive information from isolated, air-gapped computers to a nearby smartphone that doesn't even require a microphone to pick up the sound waves. Dubbed GAIROSCOPE, the adversarial model is the latest addition to a long list of acoustic, electromagnetic, optical, and thermal approaches devised by