http://lainyubrp2aabmxhepbttfdbl53dct2inqifs42buvpf6w44uiitbeqd.onion/blog/matrix.html
Conclusion To summarize, matrix is the perfect thing for chatting with your friends and random dudes in public groups, keep your work correspondence in a secure location on the company's server and so on, but for illegal activities it's better to consider something else :-) There are better solutions, but they are too compicated for normies.
The main feature here - even a child could use it! Yes, you can swear endlessly about the problems listed above, but a better option...