Related to: https://support.mozilla.org/en-US/kb/insecure-password-warning-firefox The solution for hiding the insecure password warning is not obvious for the basic users/not user-friendly enough and can also be really annoying for many websites (press the enter key = sending the form; the escape key works but it can lead to unwanted behaviours too). I suggest to put a button to close the insecure password warning.