Five vulnerabilities, two deemed critical, have been found in the Terrestrial Trunked Radio (TETRA) standard. TETRA is the most widely used police radio communication system outside the US. It is used by fire and ambulance services, transportation agencies, utilities, military, border control, and customs agencies in more than 100 nations globally and by the UN and NATO.
The vulnerabilities were discovered by cybersecurity firm Midnight Blue (Amsterdam, Netherlands) with funding from NLnet as
