This is why it is more important than ever to use passwords which cannot be guessed. Choosing a password The following guidelines will not guarantee you safety, but will make it much more difficult for your password to be compromised. They are between 6 and 8 characters in length. They are a mixture of lower and upper case characters, digits and punctuation marks. Certain punctuation marks, however, should be avoided.
Spaces are generally safe to use.
My password can't be that important. As with so many other things, it only takes one. Guessing your password is the proverbial foot in the door. Once on a system it is easier for an intruder to compromise other accounts, use the system's resources to cause more trouble elsewhere, or bring the system down entirely. They'd never guess that.