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SpamAssassin rule for stock pump and dump spam

On 10/25/06 23:09, dan at wrote:
> There is a huge surge, and it appears to be a concerted
> attempt to defeat Bayesian filters (and DCC).

Via /.: 

Bot Nets Behind Recent Spam Surge

Earlier this week I checked my log for mail to unknown users; >34,000 in 24 hours.  That's pretty hefty for a single-person smtp server.  Yeesh!  I attribute the spike to machines not in the blacklists, eg: hijacked PCs. 

"... and some experts reckon it's past time to start worrying." - I agree with that quote.

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