Educause Security Discussion mailing list archives

Re: Passwords & Passphrases


From: Martin Manjak <mm376 () ALBANY EDU>
Date: Mon, 19 Nov 2007 15:01:49 -0500

This is a very timely topic from my perspective. We are moving to SSO
via a portal and I'm trying to convince my colleagues that if we're
going to continue to rely on single factor authentication, we need to
move beyond 8 characters with mixed case and special characters. I would
like to see us require a 15 character pass phrase which, in my view, is
more secure (even without complexity), and both easier to type and
remember.

This is a tangential topic, but I was wondering if anyone on the list
was familiar with brute force tools that would work against web forms.
My concern is that without some kind of lock out policy, an account with
a 8 character password would be vulnerable to a brute force attack.

It's encouraging to see Jonny's reply below on the use of longer pass
phrases.

Sweeny, Jonny wrote:
Passphrases MUST contain at least:

    * 15 to 127 characters (at least 4 of which are unique)
    * 4 or more words (a "word" is defined as 2 or more distinct letters separated by 1 or more spaces or non-letters)

Passphrases MUST NOT:

    * contain the "at" sign (@)
    * contain the "number" sign (#)
    * be a common phrase (such as "to be or not to be" or "April showers bring may flowers")
    * be based on predictable patterns such as the alphabet or the layout of a standard keyboard
    * contain your name or username

No expiration presently.  We're working on that.

--
~Jonny Sweeny, GSEC, GCWN, GCIH, SSP-CNSA
Incident Response Manager, Lead Security Analyst
Office of the VP for Information Technology, Indiana University
PGP key & S/MIME cert: https://itso.iu.edu/Jonny_Sweeny
jsweeny () iu edu  p(812)855-4194  f(812)856-1011




-----Original Message-----
From: Brian T Nichols [mailto:bnichols () LSU EDU]
Sent: Monday, November 19, 2007 12:49
To: SECURITY () LISTSERV EDUCAUSE EDU
Subject: [SECURITY] Passwords & Passphrases

Colleagues,



We are researching best practices regarding passwords and passphrases (length, complexity, expiration, etc..).



Does anyone have a standard and/or policy they can share?



Thanks in advance!



-Brian



Brian Nichols, CISSP, CISM, CISA, CIA

Chief  IT Security & Policy Officer

Louisiana State University


--
Martin Manjak
Information Security Officer
University at Albany
CISSP, GIAC GSEC-G, GCIH, GCWN

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