HTTPS Everywhere
HTTPS Everywhere is a browser extension produced as a collaboration between The Tor Project and the Electronic Frontier Foundation. It encrypts your communications with a number of major websites.
ForceTLS allows web sites to tell Firefox that they should be served via HTTPS in the future; this helps secure you from accidentally negotiating an insecure session...
forcetls allows web sites to tell firefox that they should be served via https in the future; this helps secure you from accidentally negotiating an insecure session with certain sites. forcetls is also compatible with strict transport security.
forcetls is an adaptation of the forcehttps protocol by collin jackson and adam barth, which supports a simple http header in forcing automatic connections to https connections in the future. this helps prevent cookie theft and other maninthemiddle attacks when you're using an insecure network.
see also https://addons.mozilla.org/enus/firefox/addon/forcetls/
https force-https strict-transport-security force-tls