Re: [OT] Challenge response.

From: Bill Seurer (seurer_at_us.ibm.com)
Date: 05/05/04


Date: Wed, 05 May 2004 07:27:41 -0500

Nils Petter Vaskinn wrote:
> On Sun, 02 May 2004 07:56:49 +0000, Shailesh Humbad wrote:
>
>
>
>>P.S. Check out my nifty new email address--completely spam-proof! Yes,
>>s@mailpass.com is my ACTUAL, non-munged email address. You (real
>>people) can email me, but spammers can't! You get an automatic reply
>>the first time you email me, and once you click on the verification link
>>in the reply, all your subsequent emails get through.
>
>
> Actually c/r mail schemes have a serious flaw: When you recieve spam with
> a faked "From" address you offload the burden of doing you spam checking
> onto the poor sod that had his address abused.

There's a more serious flaw. What happens when two people who both use
challenge/response systems try to email each other for the first time?



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