If you have a newer version of Firefox (with the three-bar icon in the top-right corner), you will want to follow these instructions: In the pop-up that appears, click the X next to any of the saved passwords that you would like to delete.Scroll down to the 'Passwords and forms' section > Click 'Manage passwords.'.Scroll down to the bottom of the screen and click 'Show advanced settings.'.
This help page will help you learn how to clear saved passwords from different types of web browsers so that they no longer autofill. Clearing your saved passwords can help remove you from this security risk. The reason for this is that it is easier for third parties to access your login credentials if the credentials are saved in a web browser. Information technology strongly recommends that you do not click to have sites remember you, your password, etc.