- Oct 16, 2014
- 11,846
- 168
https://support.mozilla.org/t5/Protect-your-privacy/Insecure-password-warning-in-Firefox/ta-p/27861

Insecure password warning in Firefox
This is a new feature that is available starting in Firefox version 51.
Firefox will display a grey lock icon with a red strike-through in the address bar, when a login page you’re viewing does not have a secure connection. This is to inform you that if you enter your password it could be stolen by eavesdroppers and attackers.
Starting in Firefox version 52, you will also see a warning message when you click inside the login box to enter a username or password.


Insecure password warning in Firefox
This is a new feature that is available starting in Firefox version 51.
Firefox will display a grey lock icon with a red strike-through in the address bar, when a login page you’re viewing does not have a secure connection. This is to inform you that if you enter your password it could be stolen by eavesdroppers and attackers.
Starting in Firefox version 52, you will also see a warning message when you click inside the login box to enter a username or password.