Danke für die tolle Arbeit von Nitrokey. Ich hätte da noch eine Anmerkung zur Vervollständigung: SICHER hedeutet nicht PRIVAT bei Matrix/Riot. Ich hatte kürzlich eine gute Seite dazu gefunden. Auf die schnelle konnte ich nur dieses Dokument finden (Müsst Ihr selber suchen, da ich nicht verlinken darf): Response_to_-_Notes_on_privacy_and_data_collection_of_Matrix.pdf Aus dem Dokument: [...] TL;DR: matrix.org and vector.im receive a lot of private, personal and identifiable data on a regular basis, or metadata that can be used to precisely identify and/or track users/server, their social graph, usage pattern and potential location. This is possible both by the default configuration values in synapse/Riot that do not promote privacy, and by specific choices made by their developers to not disclose, inform users or resolve in a timely manner several known behaviours of the software. Data sent on a potential regular basis based on a common web/desktop+smartphone usage *********even with a self-hosted client and Homeserver:************ #The Matrix ID of users, usually including their username. #Email addresses, phone numbers of the user and their contacts. #Associations of Email, phone numbers with Matrix IDs. #Usage patterns of the user. #IP of the user, which can give more or less precise geographical location information. #The user's devices and system information. #The other servers that users talks to. #Room IDs, potentially identifying the Direct chat ones and the other user/server. With default settings, they allow unrestricted, non-obfuscated public access to the following potentially personal data/info: #Every file, image, video, audio that is uploaded to the Homeserver. #Profile name and avatar of users. [...]