Security Basics mailing list archives

Re: How to authentificate an user via telephon?


From: Valter Santos <vsantola () devfusion net>
Date: 05 Dec 2002 17:55:10 +0000

Hello Gene,

but that sollution will fail for a person-target attack... I can find
with little effort the ssn & birthdate of a target person and pretend to
be her/he. 

I suppose the callback sollution is better, althought as it flaws 8-(


cheers,
/valter


On Wed, 2002-12-04 at 17:27, Gene Barlow wrote:
Robert,

    Currently, I'm in the process of getting approval on a new procedure 
for doing just that.  If approved, we'll write a script that will query 
the last 4 digits of the users ssn & birthdate against our ERP software. 
 So, for instance, if John Doe calls and requests a password change, 
we'll ask for the last 4 digits of the ssn and their birthdate, type it 
in the script, and see if that user's name is returned in the response. 
 If so, we know (hopefully) that the user is who he says he is...

Hope this helps...
Gene...

Robert Sieber wrote:

Hello colleauges,

imaging the following situation:

User calls the helpdesk to reset/alter some kind
of account-password (NT, RAS, PKI-PIN ...) and you 
has to determin wheter the user is the correct 
(owner of the account) user. What would you do
to authentificate the users identity?

What are good methodes to do this? It should be
easy for the user but secure for the administration.


Robert


-- 

---..---..---..---..---..---..---..---..---..---..---..---..----
Valter Santos

vsantola () devfusion net                         |||
http://devfusion.net/~vsantola/keys/          (@ @)                 
------------------------------------------oOO--(_)--OOo---------

Attachment: signature.asc
Description: This is a digitally signed message part


Current thread: