If lost or destroyed, a new copy can be obtained from the bookcase in your Player-Owned House made through Construction.
Below is the text you can read from within the book.
- Password Tips
- RuneScape Authenticator
- Other Security Tips
A good password should be easily remembered by yourself but not easily guessed by anyone else. Choose a password that has both letters and numbers in it for the best security but don't make it so hard that you'll forget it! Never write your password down or leave it in a text file on your computer, someone could find it easily! Never tell anyone your password in RuneScape, not even a Moderator of any kind.
The Authenticator is the new system to protect your account. It will create an added security measure to your account, and means that when you login from a new PC you are required to enter a code from an app on your phone. Visit http://www.runescape.com/authenticator for information on how to setup the new system.
Other Security Tips
Never give your password to ANYONE. This includes your friends, family and moderators in game. Never leave your account logged on if you are away from the computer, it only takes 5 seconds to steal your account!