This was posted to cybersecurity and I am not sure how to make a proper crosspost. Or even if that is a thing I can do. So just dropping a lemmy link in the url. Hope that is OK. The external link is here -> https://www.malwarebytes.com/blog/privacy/2026/08/aliexpress-caught-using-silent-audio-to-fingerprint-visitors-browsers

Given how much fingerprinting relates to privacy, seems related for this group too. Yet Another Fingerprinting Technique. It doesn’t record the user, just a silent signal which still has variance due to the unique device.

researchers and browser maker Brave reported finding silent Web Audio processing on the site that could help fingerprint visitors’ devices.

on top of that, the traditional fingerprinting signals are used too,

The scripts also gathered information tied to canvas rendering, WebGL, display settings, hardware configuration, WebRTC behavior and user interactions. Together, those signals can create a more detailed profile of a device than any one signal would provide on its own.