Can I ask the moderators of this instance to delete my posts without a trace so that they are not in the federation database?
Is there a way to chat safely on Lemmy? Alas, I like to communicate with different people from different countries, because I can’t help myself, by the way, how then can I pass the keys to my matrix room to others or how can others give their keys?
Tips for online communication in a world where super-AI is perfect at finding people by their patterns and linking it to a person in a database.
A instance admin can only delete your posts from that specific instances database, so you should assume that there will always be some sort of copy of your post (with things like search engine caching and the Internet archive this basically the case on any social media).
Not a active matrix user, but the default Lemmy chat is definetly not secure. Lemmy allows you to add your matrix handle in your profile settings so it will appear when someone looks at your profile