Meanwhile the intelligence agencies of the world siphon up signals like hungry hungry hippos because SDRs are cheap and ubiquitious, when ten-ish years ago they were poorly documented, expensive, and the encryption schemes used strong enough using 4g over wifi was a very practical security decision.
Here's an old talk that references someone's deadname with good technical information:
https://www.youtube.com/watch?v=DU8hg4FTm0g|
And a more recent talk on similar subjects:
https://media.ccc.de/v/31c3_-_6249_-_en_-_saal_1_-_201412271... |
https://berlin.ccc.de/~tobias/31c3-ss7-locate-track-manipula...
(Apologies to Kristin, if they see this: I had trouble locating JUST the slides, not audio or video, of the DC18 talk or I would have simply linked the slides.)
I'm cofounder of Noor —a voice chat app— and had to tell this to EVERY single new user, and they all were amazed. So we made a website you can link to whenever you hear someone using AirPods on a Zoom call.
