What’s good password ?

- Use different passwords for different Web sites. Maintain separate passwords for e-mail, work and other important Web sites and routine web- surfing. - Use difficult-to-guess password by taking the first alphabet from each word of a phrase. What is a good password? It is a password which is at least 8 characters long, not easily guessable, contains mixture of uppercase and lowercase letters as well as numbers, and preferably contains special characters like $, *, %, !, * etc. Some examples of a good password are: &(^.3235*cRack&.^). - Always use alphanumeric passwords with special characters and try to adopt phrasing technique to construct passwords which are easy to remember, hard to guess and impossible to crack. Create a unique acronym. Never use a dictionary based password like guest, home etc. It takes little time for a good cracker to crack the password.

Soure link- http://www.nag.co.in/securitytips.html