Re: [Asrg] Please critique my anti-spam system

[Seth Breidbart <sethb at panix.com>]

"Michael Kaplan" <mkaplansolution at lycos.com> wrote:

> Let's do the math.  A spammer finds 5% of his spam reaches people.

Way high.

> Or he can guarantee delivery to 1 million people by 
> decoding one million CAPTCHA at a cost of $1000 a day,
> adding up to $365,000 dollars of additional expense per
> year.

Not quite: he _runs_ a third-world CAPTCHA-decoding company, and
_steals_ the email addresses that his company validates.

> And the list cannot be sold to other spammers since almost every
> address on the list will be deactivated after the first large wave
> of spam is sent out.

So the single spammer sends out 15 waves of spam simultaneously.

Seth

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