Many by now has heard about Extended Validation (EV) Certificates. This technology lets sites that meet a higher standard of verification appear differently in a browser (typically with a green background behind the url). IE 7 has supported this technology, and Firefox has been planning this for 3.0. VeriSign (the very expensive SSL Cert guys) created an extension to add UI support to Firefox.
Very interesting to see features like this added to Firefox by an extension. I haven’t seen many security related extensions before.
[Hat tip: InfoWorld]