AliExpress accused of stealth audio fingerprinting that even disrupts Bluetooth headsets

A security researcher alleges AliExpress used an obfuscated WebAudio-based fingerprinting method that emits inaudible audio to the browser to gather device/browser data, which reportedly disrupted Bluetooth headphones for a user; Firefox says its anti-fingerprinting protections mitigate this technique, Brave says it blocks the involved scripts, while Chrome/Safari have defenses; AliExpress has not commented publicly.