http://qvt3o2ipzxx3gtoyafd3ptqwsxjs52enlwlxuryn2xjkm7hnp5icd6yd.onion/coyim/whats-new-v04/introduction/2022/02/13/whats-new-in-v04-improved-security.html
Onion services are basically a method that Tor offers that improves the
security of the connection even more than the regular Tor connection does. Fundamentally, when connecting using an onion
service, your traffic will never leave the Tor network at all, before reaching the server. However, not all XMPP servers
offers support for onion services, and it can sometimes be hard to find the information for those that do.