How to enable HTTPS-Only mode in Firefox to protect your data

Last week, the Mozilla Foundation launched a new version of the Firefox browser called (Firefox 83) that provides faster page loads and less memory usage, as well as supports some new features that improve security, including: HTTPS-Only mode that protects your data while Browse web sites.

First; How does HTTPS-Only mode work in Firefox?

HTTPS is the primary protocol that most websites currently use to maintain the privacy and security of users, as it establishes a secure and encrypted connection between your browser and the server of the website you are visiting; To prevent third parties from accessing the transmitted data or tampering with it to deceive you.

However, some websites still use the old, insecure (HTTP) protocol, which does not protect your data, and transmits it through clear, easy-to-read texts, making it easier for hackers to access and manipulate it easily, in addition to that; The web contains millions of old (HTTP) links that point to insecure versions of websites, and when you click on such links, your browser automatically connects to the website using the insecure HTTP protocol.

Therefore, version 83 of Firefox browser supports (HTTPS-Only) mode to improve security, as the browser will only load sites that support the encrypted HTTPS protocol. If the site only supports the HTTP protocol, the browser will alert you and ask for your consent to download the site; This makes the browser more secure while browsing the web, using your credit card, or entering any other sensitive information.

Second; How to activate this mode in Firefox browser:

  • Go to Firefox, then tap on the three horizontal lines in the upper-right corner.
  • Click on the (Options) option.
  • On the page that appears, select the option Privacy & Security on the left side.
  • Scroll down to the section HTTPS-Only Mode, then select the option (Enable HTTPS-Only Mode in all windows).

After activating this option, if you visit a website through an unencrypted HTTP link and the site supports HTTPS, you will be redirected to the encrypted version of the site automatically.

Third; What happens if the site does not support HTTPS?
If you visit a site that does not support the HTTPS protocol after activating the new security mode in Firefox, you will see an error message explaining the security risks and asking you whether or not you want to connect to the website using HTTP, as shown in the following picture:

It may also happen rarely; The website itself supports HTTPS, but the multimedia files available on it, such as: pictures or videos are not available via the same protocol, and then some web pages may not work properly or may crash.

In this case; You can temporarily turn off (HTTPS-Only) mode for this website by clicking the lock icon in the address bar, then selecting Off temporarily.

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