Our security division would like to take this opportunity to remind you of the fact that a good computer password should consist of a mix of mixed-case letters and numbers. Avoid obvious and verbatim ones, such as birthdays or pets' names, or any single word in a dictionary. It should not include "clever" references to your favourite books, films, sports team etc. Ideally it should be chosen using a randomizing technique such as Diceware (or Fire Encrypter) to eliminate any association between you and your password. Admittedly, a great many real people miss this memo too. Examples of Swordfish: