How does requiring my password to change every 90 days, requiring the password complexity and disallowing previous passwords increase security?
Simply by changing your password by one character, you are effectively changing it completely. Each time a password is created, a one time algorithm, called a “salt” is generated that modifies the newly created password by permutating each character. This means that even if two users choose the same password, their password hashes (the way a password looks when it is encrypted) will be different by both the types and numbers of characters. This increases password strength exponentially since a password cracker cannot simply compare the two hashes and deduce that the passwords are the same. It will take substantially longer to crack the new password as well; by the time you change your password again (three months) the cracker would have to start all over again with a completely different password. Based on our current complexity requirements, it would take longer than 90 days. In addition, the password system will prevent you from reusing any of your previous passwords. Any previous pa
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