Ultrasound Tracking Could Be Used to Deanonymize Tor Users

[reactor]

Ultrasounds emitted by ads or JavaScript code hidden on a page accessed through the Tor Browser can deanonymize Tor users by making nearby phones or computers send identity beacons back to advertisers, data which contains sensitive information that state-sponsored actors can easily obtain via a subpoena.

The attack that the research team put together relies on tricking a Tor user into accessing a web page that contains ads that emit ultrasounds or accessing a page that contains hidden JavaScript code that forces the browser to emit the ultrasounds via the HTML5 Audio API.

https://www.bleepingcomputer.com/news/se...tor-users/

https://www.youtube.com/watch?v=GRPYF9b7_tA

hey Boss, please block this

[Admin]

Audio API can be disabled in Cent.
There is an option:"Under the hood"->"Privacy"->"Disable HTML5 AudioContext"