Threema: analysis of a secure messenger
[EDIT: 09.01.2023]: Threema has reacted to the publication in bold terms: The [research] paper is based on an old protocol that is no longer in use. The presented findings do not apply to Threema’s current communication protocol “Ibex” or have already been addressed. None of them ever had any considerable real-world impact. See how the story develops. Threema is a Swiss encrypted messaging application which has been widely advertised as a secure alternative to Signal, WhatsApp or Wire....