PASSWORD DOS & DON’TS

DON’T use a word contained in English or foreign language dictionaries, spelling lists, proper name lists, encyclopedias, or other lists of words. Password cracking programs use these electronic resources tirelessly looking for password matches.

DON’T use your login name in any form (i.e., reversed, capitalized, doubled, etc.)
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DON’T use your first, middle, or last name in any form.

DON’T use a friend’s name, your spouse’s, or child’s name
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DON’T use other information easily obtained about you. This includes license plate numbers, telephone numbers, social security numbers, the make of your automobile, the name of the street you live on, etc.

DON’T use a password of all digits, or all the same letter
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DON’T use a password shorter than six characters.

DON’T share your password with anyone.

DON’T write your password down.

DON’T leave your PC logged on and unattended.

PASSWORD DO’S

DO use a password with mixed-case alphabetic.

DO use a password with a combination of alphabetic and non-alphabetic characters (digits or punctuation)
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DO use a password that is easy to remember, so you don’t have to write it down
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DO use a password that you can type quickly, without having to look at the keyboard.

DO choose a line or two from a song or poem, and use the first letter of each word and add some non-alphabetic characters. Source: Internet