Hi, I really concern about my browser privacy, so i need to secure it with something like you need to login if you to use this browser. In google chrome, it's just so simple what i need to do is just install extension called '''Set password for your browser ( chrome lock ) by eswar yaga'''. but in firefox it's dead end. I found all people referred '''master password (with additional option)''' or '''startupmaster'''. Startupmaster now outdated, and master password now only work for securing password management. The old version of master password has additional option for startup but i can't found it. Please help me. Thank you Reference : - [http://example.com https://superuser.com/questions/745821/adding-a-startup-password-to-a-browser] - [http://example.com https://7labs.io/tips-tricks/lock-chrome-and-firefox.html]