New Attack Lets Hackers Decrypt VoLTE Encryption to Spy on Phone Calls

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The crux of the problem is that most mobile operators often use the same keystream for two subsequent calls within one radio connection to encrypt the voice data between the phone and the same base station, i.e., mobile phone tower.
Thus, the new ReVoLTE attack exploits the reuse of the same keystream by vulnerable base stations, allowing attackers to decrypt the contents of VoLTE powered voice calls in the following scenario.


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