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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Sun, 2 Mar 2014 23:50:35 -0700
Subject: Re: Password validation security issue
To: Python <python-list@python.org>
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On Sun, Mar 2, 2014 at 10:44 PM, Chris Angelico <rosuav@gmail.com> wrote:
> Of course, the whole concept depends on being able to use long
> memorable passwords. Any system that sets a maximum password length of
> anything less than about 30-40 characters is causing its users
> problems. There's almost never any reason to set a maximum at all.

Well, there's usually *some* reason.  If you allow your users to set a
100-MB password then your system has to accept and attempt to verify
any 100-MB passwords that might get passed in, which opens you up to a
certain DoS attack.  Setting the limit at 8 characters though is
absurd and a probable indication of bad password handling.