Follow these guidelines for passwords:
Handle your password with strict confidence
Change your password frequently, at least every 49 days
If you believe that your password may have been compromised, change it immediately
Do not base your password on anything that can be easily guessed or determined
Create a password that is “easy to remember but hard to guess”
Immediately replace any initial passwords with a personal password
Take care that no one is watching when entering your password
Adhere to the password rules of the system you are using