2 Cops 2 Broadcasting: TETRA End-To-End Under Scrutiny
Black Hat USA 2025 · Day 1 · Briefings
Midnight Blue — the team behind the landmark TETRA:BURST disclosures in 2023 — returned to Black Hat with a follow-up that dismantles the mitigations deployed in response to their original research. They demonstrate that TETRA end-to-end encryption, the "expensive solution" recommended for the most sensitive users (intelligence agencies, special forces, SCADA operators), harbors its own design flaws allowing voice injection, SDS replay, and plaintext traffic injection into critical-infrastructure networks. ---
AI review
Midnight Blue returned with proof that two years of 'tireless patching' on TETRA accomplished essentially nothing. Voice injection into E2E-encrypted law enforcement calls, a working bypass of ETSI's keystream-recovery countermeasure, and a live SCADA circuit-breaker trip. The NDA-enforced secrecy protecting nobody but the vendors is the bitter contextual frame around technically devastating research.