The TETRA standard is used in radios worldwide. Security researchers have found multiple vulnerabilities in the underlying cryptography and its implementation, including issues that allow for the decryption of traffic.
So it’s local and unencrypted, but the local services are encrypted? Strange indeed. I wonder then if something is re-amplifying the signal after it has been received and decrypted - maybe bad wiring at a reception site, or interference with another field.
So it’s local and unencrypted, but the local services are encrypted? Strange indeed. I wonder then if something is re-amplifying the signal after it has been received and decrypted - maybe bad wiring at a reception site, or interference with another field.