Comparison of Password Guessing and Cracking and How They Are Used During a Pentest
However, the simplest of computers could guess every possibility in a little more than a day. If more than one of these computers are used, or especially a brand new home desktop or supercomputer, the results would almost be instantaneous. The best way to have a password be complex is to incorporate all types of characters. This way means using not only letters, but a mixture of uppercase and lowercase letters, numbers, and symbols. An eight character password with all four types would increase the possibilities to 7.2 quadrillion possibilities.
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