HTTPS Everywhere is a popular security add-on for Firefox that can protect your login details by encrypting your web communication with several websites that support secure HTTPS connection ( but may not default to secure), for example, Facebook, Twitter, Hotmail, Dropbox, etc.

The latest release of HTTPS Everywhere offers improved protection against the latest buzz word Firesheep, a Firefox add-on that watches fro cookies, and lets others to log into your account if you are browsing on an open wireless network.

HTTPS Everywhere now provides much better protection against it for Facebook, Twitter and Hotmail accounts.

The latest release adds new protection for bit.ly, Dropbox, Amazon AWS, Evernote, Cisco and Github. More details about the latest release and download available at source