Cybersecurity analysts have uncovered a new array of security vulnerabilities within the Terrestrial Trunked Radio (TETRA) communication protocol, particularly affecting its proprietary end-to-end encryption (E2EE) framework, thereby rendering the system susceptible to replay and brute-force assaults, as well as enabling the decryption of secured traffic.

Information regarding these weaknesses – referred to as 2TETRA:2BURST – was disclosed at the Black Hat USA.