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AliExpress runs silent WebAudio fingerprinting that breaks Bluetooth multipoint

https://blog.laserphile.com/2026/08/aliexpress-webpage-keeping-multipoint.html
6•emctech•43m ago

Comments

emctech•43m ago
Recently I ran into a problem with my Bluetooth headphones. They support multipoint bluetooth audio, so they can be connected to my PC and phone at the same time. Opening the Aliexpress webpage causes a silent audio stream keeping the PC>headphone link active blocking my phone audio. An investigation reveals obfuscated code running device fingerprinting with a side effect being a silent audio stream that firefox, chrome and windows does not recognise but which kept the bluetooth connection active.
robtherobber•31m ago
Concerning situation, I think. And I suspect (perhaps wrongly) that there are even more reasons for concern with technology that can track, capture, leak etc. information that's more sensitive or valuable, depending on how one wishes to look at it. Mobile phones, computers, routers etc. -- all have the potential to siphon out valuable information to a bad actor, especially when it comes to espionage, military, commercial etc. This has already happened at a significant scael, so it's not a remote scenario.

At the very least, governments and institutions should develop a framework to investigate all acquired technology. The community / civil society could also create something similar, a script that would analyse at a deep level everything that can be analysed with a piece of software even by a complete novice.

emctech•27m ago
Yes, I find it concerning too. I particularly dislike that windows was not aware, nor could it stop the audio stream from effecting the hardware. What other side channels like that exist? Perhaps I can be blamed for using windows
robtherobber•20m ago
> Perhaps I can be blamed for using windows

That would be unreasonable, I argue. No one should have to worry about the security of their devices and data privacy based on which OS they use. Whilst it can be argued that different OSs serve different needs, privacy and security should not be debatable. In fact, most countries have dedicated legislation for this; whether it's just, applied correctly, or serves the public before any other party are indeed discussions to be had.

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AliExpress runs silent WebAudio fingerprinting that breaks Bluetooth multipoint

https://blog.laserphile.com/2026/08/aliexpress-webpage-keeping-multipoint.html
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