XMPP MitM attack via PLAIN mechanism

Are you testing MitM of an old protocol that starts using clear-text communications?You should consider spoofing server replies with some downgrade attack! This old trick still works sometimes against protocols that like:XMPP, SMTP, POP3 and others Let’s illustrate this with an XMPP example from the field 🙂 Introduction: In XMPP, credentials are not supposed to …