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Date: Sun, 11 Dec 2011 00:53:54 +0100
From: Per Thorsheim <per@...rsheim.net>
To: Wesley Tansey <tansey@...utexas.edu>
Cc: john-users@...ts.openwall.com
Subject: Re: Password datasets with creation rules?



> >In short: even if you do find any leaks of passwords that are
> >clearly from environments with creation policies in place
> >(length/complexity), you won't become much wiser without lots of
> >additional info.
> 
> 
> Would you mind expanding on that? I'm not quite as interested in
> gaining summary statistics as I am in comparing the performance of a
> model on it. I've done a pretty exhaustive search at this point
> though, so I've kind of lost hope that I'll find one.
> 
Well, I could ask questions like:
- how old are the passwords?
- Do they originate from humans, service accounts or bots?
- have the written/implemented password policy changed, while accounts
haven't had their passwords updated to comply with the new policy?
- When were the accounts created, last used etc?

Of course when your primary objective is to do performance analysis
against such data using different models (reminds of the the works of
Matt Weir at reusablesec.blogspot.com), the above questions may not be
that important.

> 
> Interesting presentation. Do you have a bibtex reference for it?
> 
Me? bibtex? No, sorry, nothing like that available. I do my stuff out of
personal interest, not from any official & academical position.

Best regards,
Per


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