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Today when trying to change my voicemail pin, I noticed the system has a rule in place which prevents users from changing their voicemail pin too soon after the previous pin change.
This was with a popular enterprise-level telephony system.
I can think of several drawbacks to any system imposing this type of restriction e.g. if I know my pin is compromised, I would want to change it right away, and this type of restriction could hinder that practice, depending on the timing.
What would be the reason(s) for implementing this type of "can't change your password too frequently" policy?