Re: [Asrg] News Article - Microsoft and spam
Yakov Shafranovich <research@solidmatrix.com> Thu, 26 June 2003 19:04 UTC
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To: Vernon Schryver <vjs@calcite.rhyolite.com>, asrg@ietf.org
From: Yakov Shafranovich <research@solidmatrix.com>
Subject: Re: [Asrg] News Article - Microsoft and spam
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Date: Thu, 26 Jun 2003 15:02:09 -0400
At 10:57 AM 6/26/2003 -0600, Vernon Schryver wrote: > > From: Yakov Shafranovich <research@solidmatrix.com> > > > ... > > I was wondering about that as well. Would hiring people for go through the > > human interface test increases the costs for spammers? Does it matter > since > > the cost is so small anyway? What about in a C/R system where a human > > interface test is used, would spammers actually go ahead and hire > people to > > pass the test from each bounced message? > >Let's do some arithmetic. At $10/hour and 10 seconds per challenge >answered or account created, the cost would be about $0.03 address. >That sounds a little but not very high to send mail until the >challenge whitelist entry is deleted by the spam target. It sounds >low for a valid sender account that can be used for millions of >messages for days until the free provider notices enough bounces >or receives a complaint and terminates it. >[..] Even if every single message has to be manually verified or sent by a human, how much would it cost anyway to hire people to do so? It seems that the advantage that spam enjoys is due to low cost of the transmission medium. In the postal system junk mail is restricted not by the fact that its sent by humans or machines, but rather by the cost of the postage itself and various laws covering illegal mail scams. Thus, in the email world it would seem that an economic solution that imposes postage costs would seem like a good solution but then again the real world does not correspond directly to the Net world. On the other hand snail mail recipients cannot have an automated system reject junk mail, unlike email users. Thus this brings us back again to consent-based communications. Users and/or their providers define filtering rules under which email is rejected or put into the bulk folder. For the most paranoid, all email is rejected unless the receiver is known, for others filtering, C/R, HTML blocking, etc. systems can be used. Once the receiver has given his consent to the sender, all email will flow freely. Consent can either be given by being put on a whitelist - then issues of forged sender must be resolved. Other ways to give consent is cryptographic tokens or passwords. Just some thoughts. Yakov _______________________________________________ Asrg mailing list Asrg@ietf.org https://www1.ietf.org/mailman/listinfo/asrg
- [Asrg] News Article - Microsoft and spam Yakov Shafranovich
- Re: [Asrg] News Article - Microsoft and spam Vernon Schryver
- Re: [Asrg] News Article - Microsoft and spam Yakov Shafranovich
- Re: [Asrg] News Article - Microsoft and spam Vernon Schryver
- RE: [Asrg] News Article - Microsoft and spam Hallam-Baker, Phillip
- [Asrg] hiring challenge responders Dave Aronson
- Re: [Asrg] News Article - Microsoft and spam Yakov Shafranovich
- Re: [Asrg] hiring challenge responders Yakov Shafranovich
- Re: [Asrg] hiring challenge responders Chris Lewis
- Re: [Asrg] hiring challenge responders C. Wegrzyn
- Re: [Asrg] hiring challenge responders Vernon Schryver
- Re: [Asrg] News Article - Microsoft and spam Chris Lewis
- Re: [Asrg] hiring challenge responders Barry Shein
- Re: [Asrg] News Article - Microsoft and spam Walter Dnes
- Re: [Asrg] News Article - Microsoft and spam Vernon Schryver