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 <title>Brad Ideas - Challenge/Response, good or bad - Comments</title>
 <link>http://ideas.4brad.com/archives/000037.html</link>
 <description>Comments for &quot;Challenge/Response, good or bad&quot;</description>
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 <title>Do any current C/R anti-spam products meet all of your criteria</title>
 <link>http://ideas.4brad.com/archives/000037.html#comment-646</link>
 <description>&lt;p&gt;Hi Brad,&lt;/p&gt;
&lt;p&gt;I was investigating C/R anti-spam as I know some folks use it and it must be a God send as far as removing spam. As I&#039;m sure many folks are, I&#039;m concerned that it will annoy some folks, as well.&lt;/p&gt;
&lt;p&gt;I like the criterion in your essay at&lt;br /&gt;
&lt;a href=&quot;http://www.templetons.com/brad/spam/challengeresponse.html&quot; rel=&quot;nofollow&quot;&gt;&lt;br /&gt;
http://www.templetons.com/brad/spam/challengeresponse.html&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Are you aware of current or forthcoming C/R anti-spam that meet all your criterion?&lt;/p&gt;
&lt;p&gt;Best Regards,&lt;br /&gt;
David Geer - Your on time technology writer!&lt;br /&gt;
&lt;a href=&quot;http://www.GeerCom.com&quot; title=&quot;http://www.GeerCom.com&quot;&gt;http://www.GeerCom.com&lt;/a&gt;&lt;br /&gt;
&lt;a href=&quot;http://geercom.blogspot.com&quot; title=&quot;http://geercom.blogspot.com&quot;&gt;http://geercom.blogspot.com&lt;/a&gt;&lt;/p&gt;
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 <pubDate>Fri, 01 Jul 2005 08:01:37 -0700</pubDate>
 <dc:creator>geercom</dc:creator>
 <guid isPermaLink="false">comment 646 at http://ideas.4brad.com</guid>
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<item>
 <title>Challenge/Response, good or bad</title>
 <link>http://ideas.4brad.com/archives/000037.html</link>
 <description>&lt;p&gt;I&#039;ve just put up a new essay on my web site on &lt;a href=&quot;http://www.templetons.com/brad/spam/crgood.html&quot; rel=&quot;nofollow&quot;&gt;whether challenge/response anti-spam systems are good or bad&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;As some may know, I&#039;ve been running such a system longer than anybody, having written one in 1997.  I wrote a white paper on &lt;a href=&quot;http://www.templetons.com/brad/spam/challengeresponse.html&quot; rel=&quot;nofollow&quot;&gt;best practices for such systems&lt;/a&gt; that some have found useful.&lt;/p&gt;
&lt;p&gt;However, I also see a lot of complaints about C/R systems.  Most of those complaints are about the new crop of C/R systems, many of which have annoying bugs.  Because some of the concerns are real, however, I felt it was time for an article on those issues for a well-behaved C/R system.&lt;/p&gt;
&lt;p&gt;Note that even my own system, in spite of being better behaved that most newer systems, does not meet all my own best practices, though it would if I were writing it again.&lt;/p&gt;
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 <comments>http://ideas.4brad.com/archives/000037.html#comments</comments>
 <category domain="http://ideas.4brad.com/archives/cat_spam.html">Spam</category>
 <pubDate>Tue, 17 Feb 2004 09:12:10 -0800</pubDate>
 <dc:creator>brad</dc:creator>
 <guid isPermaLink="false">38 at http://ideas.4brad.com</guid>
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