August 28, 2026•1 min read•from InfoQ

Audio Fingerprinting Discovered on Alibaba Websites While Debugging BLE Multipoint Disconnects

A recent discovery revealed that AliExpress employs silent audio streams for device fingerprinting, leveraging the Web Audio API. This technique involves analyzing hardware-specific audio processing to distinguish user devices. Privacy-focused browsers have developed countermeasures, highlighting a security gap in current web standards regarding audio context initialization and user privacy.

By Olimpiu Pop

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Tagged with

#Audio Fingerprinting

#AliExpress

#Web Audio API

#Device Fingerprinting

#Silent Audio Streams

#Hardware-Specific Audio Processing

#Privacy

#User Privacy

#BLE Multipoint

#Web Standards

#Audio Context Initialization

#Countermeasures

#Privacy-Focused Browsers

#Security Gap

#Audio Analysis

#Device Identification

#Alibaba

#Web Security

#Web Debugging

#Disconnects