@hehemrin @JoergSorge Matrix is decentralized and has had a few nasty (security, secrecy, privacy) bugs discovered lately, Signal is centralized and not full open source. Difficult. Threema is used by a lot of well-informed people.
@count @JoergSorge First time I hear, or not remember, Threema.
@count @JoergSorge Rather telecom have been my area, partly with ex internal IT-tool owner. But standard tools have been out of my control... so typical tools like Microsoft etc. But as person, I am interested in privacy and security, open source, Linux etc.