Swiss Army's Threema messaging app was full of holes – at least seven
A supposedly secure messaging app preferred by the Swiss government and army was infested with bugs – possibly for a long time – before an audit by ETH Zurich researchers.[PDF] detailing seven vulnerabilities in Threema's home-grown cryptographic protocols. The vulnerabilities, if exploited, could have allowed miscreants to clone accounts and read their messages, as well as steal private keys and contacts and even manufacture compromising material for blackmail purposes.
The three researchers – computer science professor Kenneth Paterson and PhD students Matteo Scarlata and Kien Tuong Truong – noted on aabout the Threema security flaws that they originally disclosed their finding to the company in October 2022, and later agreed on a January 9 public disclosure date. Threema released its Ibex protocol in late November"to further mitigate our attacks," and the researchers noted they have not audited this new protocol, which was released after their investigation. They do, however,"believe that all of the vulnerabilities we discovered have been mitigated by Threema's recent patches," the researchers wrote.
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