
Encryption of TETRA radio systems and the ethical questions of decoding
TETRA (Terrestrial Trunked Radio) is a digital radio communication standard used worldwide by government, emergency, and critical infrastructure organizations such as police, fire brigades, ambulance services, military units, railways, and utility providers. A key feature of such networks is robust, encrypted communication that protects against eavesdropping and misuse. In recent years, however, several researchers and…