CDT officials wrote: Cross-device tracking can also be performed through the use of ultrasonic inaudible sound beacons. Compared to probabilistic tracking through browser fingerprinting, the use ...

American university researchers have developed a novel attack which they named "Near-Ultrasound Inaudible Trojan" (NUIT) that can launch silent attacks against devices powered by voice assistants ...

A team of computer scientists has developed a new breed of malware, which can leap between devices using inaudible audio signals—then covertly transmit passwords and other sensitive data without ...

Inaudible ultrasound commands can be used to secretly control Siri, Alexa, and Google Now It’s an effective hack, but unlikely to do much damage in the real world by James Vincent ...

Researchers have designed a sound that is completely inaudible to humans (40 kHz or above) yet is audible to any microphone. The sound combines multiple tones that, when interacting with the ...

NPR's Ailsa Chang talks with neuroscientist Daniel Cameron, who found that inaudible, low-frequency bass appears to make people boogie nearly 12% more on the dancefloor.

It also describes the first documented case of the use of ultrasound for defense against predators, in a distress call of ear-piercing intensity to many animals, but inaudible to humans.