Turns out secrecy doesn't breed security
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TETRA is the Terrestrial Trunked Radio protocol, which is used in Europe, the UK, and other countries to secure radio communications used by government agencies, law enforcement, military and emergency services organizations.in TETRA, two deemed critical, that could allow criminals to decrypt communications, including in real-time, to inject messages, deanonymize users, or set the session key to zero for uplink interception..
It did, however, face criticism from the security community over its response to the vulnerabilities — and the proprietary nature of the encryption algorithms, which makes it more difficult for proper pentesting of the emergency network system..that ETSI was discussing making the TETRA algorithms public. She also quoted Matthew Green, a Johns Hopkins University cryptographer and professor, who said keeping algorithms secret is a dated idea that makes problems worse.
Zetter indicated that ETSI's recent security failures may have changed some members' minds about removing the cloak of secrecy around the technology. ETSIIt didn't provide any additional information about the flaw used to break into the portal, but noted"ETSI has fixed the vulnerability."
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