Re: [Asrg] An Anti-Spam Heuristic
Bart Schaefer <schaefer@brasslantern.com> Thu, 13 December 2012 15:24 UTC
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From: Bart Schaefer <schaefer@brasslantern.com>
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Date: Thu, 13 Dec 2012 07:24:01 -0800
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Comments: In reply to Rich Kulawiec <rsk@gsp.org> "Re: [Asrg] An Anti-Spam Heuristic" (Dec 13, 9:03am)
References: <SNT002-W143FB9A867C92FA80D90E04C54E0@phx.gbl> <20121213140359.GA2187@gsp.org>
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Subject: Re: [Asrg] An Anti-Spam Heuristic
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On Dec 13, 9:03am, Rich Kulawiec wrote: } } > A number of heuristics include increasing the computation required to } > send and receive an email, for example one to a few minutes of computation } > per email on desktop computers. } } I don't think you can do this. I think you're trying to drown someone } who owns the ocean, and that the attempt is futile. But perhaps you have } an approach that's eluded others, that overcomes the obvious problems, } and I just don't see it yet due to insufficient caffeine intake. Generating "cash" with computing resources means they can print all the money they want. For a pay-to-play scheme to have any hope of working, it needs to be based on a resource that can be controlled from outside. Which leads to the same discussion we had four years ago. Today is the anniversary of http://tools.ietf.org/html/draft-irtf-asrg-postage-00 which never went went anywhere beyond that. It is acknowledged that the bad guys can steal postage from a zombied system almost as easily as they can steal compute resources, but it's easier to discover and react to the theft of something that doesn't invisibly regenerate.
- [Asrg] An Anti-Spam Heuristic Adam Sobieski
- Re: [Asrg] An Anti-Spam Heuristic Steve Atkins
- Re: [Asrg] An Anti-Spam Heuristic Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic John Levine
- Re: [Asrg] An Anti-Spam Heuristic Adam Sobieski
- Re: [Asrg] An Anti-Spam Heuristic John Levine
- [Asrg] The Real Problem (was: An Anti-Spam Heuris… Andrew Sullivan
- Re: [Asrg] An Anti-Spam Heuristic Rich Kulawiec
- Re: [Asrg] An Anti-Spam Heuristic Bill Cole
- Re: [Asrg] An Anti-Spam Heuristic Bart Schaefer
- Re: [Asrg] The Real Problem Chris Lewis
- Re: [Asrg] The Real Problem Alessandro Vesely
- Re: [Asrg] An Anti-Spam Heuristic Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic Michael Thomas
- Re: [Asrg] The Real Problem (was: An Anti-Spam He… Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic John Leslie
- Re: [Asrg] An Anti-Spam Heuristic Seth
- Re: [Asrg] An Anti-Spam Heuristic Steve Atkins
- Re: [Asrg] An Anti-Spam Heuristic Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic Steve Atkins
- Re: [Asrg] An Anti-Spam Heuristic Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic Chris Lewis
- Re: [Asrg] An Anti-Spam Heuristic Barry Shein
- Re: [Asrg] An Anti-Spam Heuristic Michael Thomas
- Re: [Asrg] An Anti-Spam Heuristic Chris Lewis
- Re: [Asrg] An Anti-Spam Heuristic Chris Lewis
- [Asrg] Countering Botnets to Reduce Spam Adam Sobieski
- Re: [Asrg] Countering Botnets to Reduce Spam Chris Lewis
- Re: [Asrg] An Anti-Spam Heuristic Martijn Grooten
- Re: [Asrg] An Anti-Spam Heuristic Adam Sobieski
- Re: [Asrg] Countering Botnets to Reduce Spam Rich Kulawiec
- Re: [Asrg] Countering Botnets to Reduce Spam Adam Sobieski
- Re: [Asrg] Countering Botnets to Reduce Spam Chris Lewis
- Re: [Asrg] Countering Botnets to Reduce Spam Rich Kulawiec
- Re: [Asrg] An Anti-Spam Heuristic John Levine
- Re: [Asrg] An Anti-Spam Heuristic John Levine
- Re: [Asrg] Countering Botnets to Reduce Spam John Levine
- Re: [Asrg] An Anti-Spam Heuristic Chris Lewis
- Re: [Asrg] Countering Botnets to Reduce Spam Chris Lewis
- Re: [Asrg] Countering Botnets to Reduce Spam Chris Lewis
- Re: [Asrg] Countering Botnets to Reduce Spam Barry Shein
- Re: [Asrg] Countering Botnets to Reduce Spam Chris Lewis
- Re: [Asrg] An Anti-Spam Heuristic Alessandro Vesely
- Re: [Asrg] An Anti-Spam Heuristic Chris Lewis