TMDA Re: [Gllug] New worm doing the rounds?

[David Damerell]

On Wednesday, 11 Feb 2004, Tethys wrote:
>What on earth makes you think that will solve the problem? As soon as
>challenge-response systems become commonplace, you can be assured that
>spammers will come up with systems to automate the response to your
>challenge, and we're back to where we started. Yes, the response can
>be made harder to automate, for example by sending it back an image,
>but that's not insurmountable, and you can be assured that spammers
>will be inventive enough to find a way to do it.

They already have - this was on RISKS a while back - albeit for
automated signups to free webmail systems that make you decode those
stupid blurry images. You set up a partly free porn site that makes
people decode the images (pulled from the site you are attacking) in
order to look at more porn, thus harnessing the power of millions of
horny teenagers.

-- 
David Damerell <damerell at chiark.greenend.org.uk> flcl?
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