It's been awhile since Hret made it possible to secure your account by requiring a password before you log in. This is optional, but it will help you if you're concerned that other people play minecraft on your computer. It will also save you the trouble of having your account banned because someone else decided to use your account.
Please remember that if you're in an environment where other people use your computer, and you save your password, or they know it, then you can use this option to secure your account.
/login -new <password> to define a password for your account.
/login -delete <current password> to delete the password.
When signing in and you require a password, type /login <password> to login.
