Firefox gives you the ability to choose which warning messages you will recieve while browsing the Internet.

For example, let’s say that you only want to send encrypted information over the Internet. However, if a situation occurs when you’re about to send unencrypted information, you’d like Firefox to notify you.

You can configure Firefox to this; and you have a few other options as well. Just go to the top of your browser and click Tools > Options:

 

 

In the “Warning Messages” section, click on the “Settings” button:

 

 

The “Security Warnings” window will open. From here, you can select the warning messages that you would like to appear: