bitch please, less than 7k, your phone has bluetooth.

I remember when you could do it with just an oscilloscope. That was back in the age of pagers though.

https://archive.ph/wip/YpqXj :

2020-08-13 | Hackers can eavesdrop on mobile calls with $7,000 worth of equipment | Ars Technica

'He also said that keystream calls must be made within about 10 seconds of the target call ending. '

'Now, researchers have demonstrated a weakness that allows attackers with modest resources to eavesdrop on calls. '

'The attack seizes on this error by capturing the encrypted radio traffic of a target’s call, which the researchers call the target or first call. '

'Because of an error in the way many carriers implement VoLTE, the attack converts cryptographically scrambled data into unencrypted sound. ', "By using what's known as an XOR operation on the encrypted data and the corresponding plaintext traffic, the researchers could generate keystream."

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