Good passwords are ones that are both easy to remember for the person who picked them and hard to guess for everyone else. The word guess is not quite accurate. Successful crackers, the people who try to break into computer systems, don't actually sit at a keyboard and guess passwords. These tools are programmed with a lot of rules about how most people pick their passwords. Obviously, good passwords avoid real words and words with numbers tacked on to the beginning or end.
Good passwords use both upper and lower case letters .
Good passwords use special characters like punctuation and other symbols. The idea is to make the universe of possible characters used in your password as large as possible to thwart automated cracking. Ideally you should have a different password for every account that you have. However, no one is really going to do that because it would be too difficult to remember them all. In this section we'll explain why more passwords actually can be more convenient and give you some guidance on how having just a few can really help you and Drexel.