This looks like a must have security plugin, for FTP, take a look...
http://fireftp.net/features.html
https://addons.mozilla.org/en-US/firefox/addon/fireftp/
https://bugzilla.mozilla.org/show_bug.cgi?id=480514
sweet FTP plugin forces TLS1.2, SSL
sweet FTP plugin forces TLS1.2, SSL
Mozilla/5.0 (Windows NT 6.0; rv:32.0) Gecko/20100101 Firefox/32.0