Other than during the initial assignment, your password should not be shared or known to anyone other than yourself.
Passwords expire every six months as well.
You must change your password at least once every 180 days. Then you will be prompted twice for the new password to check for spelling errors. Passwords must include at least one non-alphabetic character and should be at least six characters long. It is unwise to use your telephone number, street address, birth date or any family member's name, including pets, as a password. A useful practice is to choose a phrase or sentence that only you know and use the leading letters to form a bizarre acronym.