The most commonly used passwords and personal identification numbers (PINs) for computers, E-mail accounts, bank accounts and other password-protected information are password... 123456... qwerty... abc123... letmein...and the user’s first name. There is no foolproof way to create a secure password, but the safest ones meet the following criteria: they contain eight or more characters... combine parts of two unusual words... mix both upper- and lower-case letters with symbols and numbers... and/or combine foreign and English words.