Mozilla has released Firefox 23.0 FINAL. The main highlight in the latest version of the open source browser is its mixed-content blocking for improved security. It blocks certain insecure content such as scripts on secure websites to prevent eavesdropping attacks. Whenever you visit such websites, all insecure content is disabled and a small shield icon in the address bar alerts the user to the presence of insecure content. You can view the blocked content by clicking the shield icon followed by the Keep Blocking drop-down menu and choose Disable Protection on This Page. See the screenshot below.
We really need this in Chrome.
Other improvements in Firefox 23 include a revamped program icon, plus the addition of a “click-to-start” option for disabled plugins. Instead of disabling or enabling plugins under about:addons, users can set plugins to “Always Activate” or “Never Activate”.