From: Peter Conrad (conradtivano.de)
Date: Fri Oct 27 2006 - 03:52:58 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi,

Am Dienstag, 24. Oktober 2006 19:34 schrieb James Strassburg:
>
> How should I go about convincing them that Amazon.com is wrong and the
> fact that they haven't had a severe account breach is no reason not to
> implement a policy ourselves? Or, to play devil's advocate with myself,
> if I'm wrong, why doesn't Amazon enforce a password policy?

as usual, you have to compare the cost of the change to the benefits.
The cost is that more complicated password procedures *will* drive
some users (potential customers) away. The benefit is that fewer user
accounts will be hacked. So how big is the damage that can be done
through a hacked user account, and how likely is it that a hacker will
actually create that much damage?

IMO, for Amazon the potential damage is medium (the attacker can
order lots of stuff for someone else), and the likelihood is low
(because the attacker can't draw a profit from the attack). OTOH,
1% fewer customers due to "complicated" password requirements
would be a big loss to Amazon.

So while Amazon's reasoning may be perfectly valid, it's not
necessarily valid for you. It depends on your situation.

(Apart from that, I wouldn't vote for password expiry, especially
not in a web application. How do you deal with expired accounts?
Delete them? Notify users before expiry? Whatever you do, it adds
to the "cost" side of the argument.)

Bye,
        Peter
--
Peter Conrad Tel: +49 6102 / 80 99 072
[ t]ivano Software GmbH Fax: +49 6102 / 80 99 071
Bahnhofstr. 18 http://www.tivano.de/
63263 Neu-Isenburg

Germany

-------------------------------------------------------------------------
Sponsored by: Watchfire

Hackers continue to add billions to the cost of doing business online
despite security executives' efforts to prevent malicious attacks. This
whitepaper identifies the most common methods of attacks that we have
seen, and outlines a guideline for developing secure web applications.
Download our The Twelve Most Common Application-level Hack Attacks
whitepaper today!

https://www.watchfire.com/securearea/whitepapers.aspx?id=701500000008YTi
--------------------------------------------------------------------------

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]