Computers could transmit highly sensitive data even without Internet, Wi-Fi, or Bluetooth by using their speakers to transmit ultrasonic noise that vibrates nearby smartphones.
25 Aug 2022
Sensitive data could be stolen from a secure computer by infecting it with malware that causes its speakers to reproduce ultrasonic frequencies to vibrate nearby smartphones, scrambling the data in motion.
Government security services and key infrastructure control systems often use “air-gapped” computers, which often have their Wi-Fi, Bluetooth, and Internet connections disabled, to prevent hackers from gaining access remotely. . Mordecai Guri at Ben-Gurion University of the Negev, Israel, has spent…