A widely used option for users Mozilla Firefox It is "MasterPassword“. This allows you to set a "master" password to protect you certificates, passwords si userele saved browser.
Once activated this option, it can not be disabled or Change Password (Master Password) without knowing the password set initially. However, if you have Forgot password "Master Password", There is a method by which you can reset it.
How to reset Master Password in Mozilla Firefox:
1. Open your browser and copy the address below into addslide:
chrome://pippki/content/resetpassword.xul
2. On the page that opens click on the button "Reset".
For security reasons, password reset in Mozilla Firefox leads to losing all saved data under the password. Users, passwords, form-s, etc..