When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user.

May 28, 2013 · In the Options window, select the Security tab. Ensure that the first option, Warn me when sites try to install add-ons, is enabled to help prevent sites from automatically installing add-ons, as Download Firefox extensions and themes. They’re like apps for your browser. They can block annoying ads, protect passwords, change browser appearance, and more. This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later. Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.

Firefox add-ons, sometimes also called extensions or addons, are small programs written in JavaScript that add, remove or modify functionality of the Firefox Internet web browser. The majority of browser extensions for Firefox are community-based, with only a handful of official additions by Mozilla employees. Add-ons serve a variety of purposes, from adding functionality to the Firefox

Aug 22, 2018 · Many of the Firefox security add-ons are available for both the desktop version of Firefox as well as the Android version. And you can find versions for Google's Chrome browser as well. May 28, 2013 · In the Options window, select the Security tab. Ensure that the first option, Warn me when sites try to install add-ons, is enabled to help prevent sites from automatically installing add-ons, as Download Firefox extensions and themes. They’re like apps for your browser. They can block annoying ads, protect passwords, change browser appearance, and more.

Firefox comes with a Default theme and optional Light and Dark themes but you can add new themes to Firefox. For additional information, see Use themes to change the look of Firefox. Disabling themes. Click the menu button , click Add-ons and select Themes. You will see one Enabled theme and a list of Disabled themes.

Mar 22, 2018 · Whenever a checkbox appears like ‘Remember me’ on a particular website, this box take the username and password and make it remembered by the browser. Furthermore, if the user wants to access from another device or machine, the Firefox security add-ons make the user fully secure access after investigating the true password.