A team of researchers from Ben-Gurion University in Israel has uncovered a novel threat to cybersecurity concerning computers operating in isolated environments. As reported by NotebookCheck, the new cyberattack method known as SmartAttack employs ultrasonic waves to transmit confidential information.

The attack involves the infected computer encoding data into ultrasonic signals, which the microphone of a smartwatch then captures. This device can transmit the information via Wi-Fi or Bluetooth, bypassing the physical isolation of the computer. Since smartphones are often prohibited in secure zones, smartwatches become practical for such attacks.

During experiments, data was successfully transmitted over a distance of up to six meters at a speed of 50 bits per second. Although this method requires both the infection of the computer and the presence of the smartwatch, researchers warn that the risks for organizations relying on physical isolation are significant.

This study calls for a reevaluation of policies regarding wearable devices in high-security areas.