Many computers cannot accept spaces as valid password characters. Also, be aware of systems that are case-sensitive. If you re not sure whether your selection is good, check it with a dictionary. If you find your password in a dictionary, then it s a bad password. Practices to Avoid Good passwords should be easy to remember, but hard to guess.
Intruders use many techniques to try to guess passwords.
Here are some tips to avoid passwords that would be easy to guess. DON T use nothing at all. Blank passwords are usually an intruder s first guess. User IDs are widely distributed through e-mail and phone lists. DON T use cyclical passwords such as the name of the current month.