When you use your car’s built-in speakerphone feature, the speakers in the car door reverberate, sending the sounds outside of the car. Maybe don’t do this while your car is parked. Everyone in the neighborhood or store parking lot can hear your very intimate or business-related conversation.
No they don’t. Not by snooping on your cellphone’s radio signals anyway: the transmission to your carrier is encrypted.
The bad guys can intercept your convo in a MITM attack by simulating a tower and getting your phone to connect to it.
But they don’t even have to do that: all it takes is subpoenaing your carrier - with a national security letter to keep it quiet and make the unconstitutional a-okay - and your carrier will gladly hand you over to them like a pig on a roast spit.
There’s this talk, where researchers found major US cellular networks decrypting people’s conversations at the tower then broadcasting them unencrypted to the entire continent via satellite:
https://media.ccc.de/v/39c3-don-t-look-up-there-are-sensitive-internal-links-in-the-clear-on-geo-satellites
Subpoena?!? those were for the before times. Now just say you’re investigating a murder while looking for a woman calling abortion clinics, no legal access, review or consequences for breaking the law.
True enough, but can you more closely follow the format of OP for my amusement? I cut the part about collection centers for rhythm ;)