Messenger-Matrix • Kuketz IT-Security Blog
www.messenger-matrix.de
Messenger: Comparison of security- and data protection-relevant features of messengers

cross-posted from: https://feddit.org/post/8944947

When talking to people don’t forget to mention (or summarize) this overview.

If you are fluent in German (or have a good translator) you might also enjoy his blog and persepctive on data sovereignty.