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PaperclipPerfector  2d ago (text post)   1745 thread views

Small-Scale Question Sunday for December 7, 2025

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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By now that claim about smartphones passively listening in 24/7 for ad targeting is quite old. Any conclusive evidence either for or against?

Modern operating systems inform you when the microphone is on. This claim requires that Facebook et al have a backdoor that's never been detected in all these years.

The FB pixel localhost sidechannel exfiltration got caught within a year or so, but the researchers that found it realized that Yandex had been using a similar technique for 7 years without getting caught.

That was a clever use of Internet permissions, which were requested by the apps, rather than a covert usage of permissions that the apps weren't supposed to have. There's a difference between using a permission creatively and using a permission that you're not supposed to have.

Does this difference actually matter? 99.99% of users will click "allow" on any permission a "trusted" app (like facebook or browser) would ask them for, and would never realize any of those deep technical aspects.

If you've got a green microphone chip in your notifications bar because Facebook is listening to you, then it's not really a mystery if Facebook is listening to you or not and this conversation would be over.

However, this doesn't happen and nobody has produced an explanation of how it could happen without the OS notifying the user that the microphone is enabled.

Nobody checks any notifications bars when your phone is in your pocket or sitting on your table. A tiny green dot is hard to miss. Also, I am not entirely convinced there's no way to turn on the microphone (hardware) without showing the green dot (software). It's be very easy to lay all these doubt to rest - make a hardware microphone mute switch, that physically (electrically) disconnects the microphone hardware. I'd trust that. Nobody does it though.

Nobody checks any notifications bars when your phone is in your pocket or sitting on your table.

On Android, apps can't turn on the microphone at all while running in the background. Accessing it while running in the foreground requires a permanent notification while the foreground process is running. To start a background process, the app must be open, so it can't start a background process while the phone is at rest.

In any case, Android maintains an audit log of all microphone accesses. It would, again, be trivial for people to demonstrate that the Facebook app is accessing the mic while the phone is locked or at rest. Somehow, nobody has produced such evidence.

A tiny green dot is hard to miss.

I agree it's hard to miss, especially because (at least on Android) everything in the notification bar is monochrome (except I guess a low battery indicator).

Also, I am not entirely convinced there's no way to turn on the microphone (hardware) without showing the green dot (software).

This is the second time this week that someone has responded to my comment with an objection that I already covered in a grandparent.

This claim requires that Facebook et al have a backdoor that's never been detected in all these years.

I expect not reading from plebbit but I feel the bare minimum of engagement on this forum should be reading the conversation you are joining.

It's especially perplexing since you thought I was talking about granting microphone permissions at first, but somehow that's not a load bearing part of your argument and your confidence that I'm wrong seems unaffected.

It's be very easy to lay all these doubt to rest - make a hardware microphone mute switch, that physically (electrically) disconnects the microphone hardware. I'd trust that.

Hmm, so you don't trust the microphone notification because you're not able to look at your notification bar, but you do trust a switch which may not do anything (when's the last time you disassembled your phone?) and that might get switched while your phone is in your pocket. Let's say, that's not a typical perspective among consumers.

Why would you trust the Phone OS to set the electronic switch off (a physical switch isn't possible) if you don't trust the same OS to not route audio to the app without your permission?

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