http://e55lzoju6enqswtvm66sk3uqukcin3377ehgiorplj4d7qyssipls4yd.onion/en/blog/what-messenger-apps-should-i-use-to-maintain-full-anonymity.php
This feature, together with the password manager that allows the user to store multiple passwords in a single space, helps immensely with the level of security that most messenger apps don't have. Speaking of password managers, people who care about protecting their accounts usually have vastly different passwords across their login credentials to ensure that hackers don't get to access every account with just one password.