Re: [Asrg] hashcash, was My take on e-postage

["Chris Lewis" <clewis at nortelnetworks.com>]

John Levine wrote:

> > Assuming spammers can build 4-way boxes out of these, how many
> > boxes will they need to fill a T1 to capacity, the way they used to?
> > Assuming a 5KB spam size, about 7500 of them.  Is this economically
> > feasible for the spammer?  You tell me.
> Of course it is.  They infect 10,000 new zombie PCs every day.
Multiply that by 6. We're seeing 65,000 - 70,000 zombie detections per 
day, and the daily detection count is still trending upwards.

80% of spam detected by this method (it's catching approximately 65-70% 
of all of our spam) is coming from detections less than 4 days old.  90% 
< 6 days old.  95% < 12 days old.

Are we having fun yet?

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