The topic about passwords never gets old. They are the unique string which a user has to enter into a web site in order for the system of that site to know who the user is.. But you already know that of course.

In the beginning passwords could be anything from just a single letter to 20 chars. Then password polices got a little stricter and most of the websites made a requirement for at least 4 characters, then the limit was lifted to 6 characters. Now in the last few years some websites have lifted the limit to 8 characters and others have also added additional security requirements such as having both upper and lower case characters and numbers in the password.
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