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Fulton Green wrote:

>For that matter, you wouldn't even need the email value in the URL; a
>spammer-side DB could associate the UNIQUE_ID value with a particular
>email addy.
>On Mon, Jan 05, 2004 at 02:22:58PM -0500, Jason Day wrote:
>>On Mon, Jan 05, 2004 at 10:51:48AM -0500, Geoffrey wrote:
>>>You can certainly validate an email address by embedding a link to a 
>>>unique image in a message if the mail tool displays images.  Simply 
>>>create a 1x1 pixel white image and name it to be unique, as:
>>>And then send it to me.  If my browers opens the image, there'll be a 
>>>record of such in the web server that's serving the image.
>>Oh, it's much worse than that.  You could put something like this in an
&gt;&gt;src=&quot;<a  rel="nofollow" href="http://3times25.net/cgi-bin/webbug?email=esoteric%403times25.net&amp;UNIQUE_ID=blahblah&amp;timestamp=2004.";>http://3times25.net/cgi-bin/webbug?email=esoteric%403times25.net&amp;UNIQUE_ID=blahblah&amp;timestamp=2004.</a>;
&gt;&gt;width=&quot;1&quot; height=&quot;1&quot;&gt;
&gt;&gt;See the webbug faq here:
&gt;&gt;<a  rel="nofollow" href="http://www.eff.org/Privacy/Marketing/web_bug.html";>http://www.eff.org/Privacy/Marketing/web_bug.html</a>
&gt;Ale mailing list
&gt;Ale at ale.org
&gt;<a  rel="nofollow" href="http://www.ale.org/mailman/listinfo/ale";>http://www.ale.org/mailman/listinfo/ale</a>

<li><strong><a name="00093" href="msg00093.html">[ale] Spam and HTML email</a></strong>
<ul><li><em>From:</em> matthew.brown at cordata.com (Matthew Brown)</li></ul></li>
<li><strong><a name="00096" href="msg00096.html">[ale] Spam and HTML email</a></strong>
<ul><li><em>From:</em> dhurst at kennesaw.edu (Dow Hurst)</li></ul></li>
<li><strong><a name="00097" href="msg00097.html">[ale] Spam and HTML email</a></strong>
<ul><li><em>From:</em> esoteric at 3times25.net (Geoffrey)</li></ul></li>
<li><strong><a name="00106" href="msg00106.html">[ale] Spam and HTML email</a></strong>
<ul><li><em>From:</em> jasonday at worldnet.att.net (Jason Day)</li></ul></li>
<li><strong><a name="00107" href="msg00107.html">[ale] Spam and HTML email</a></strong>
<ul><li><em>From:</em> ale at FultonGreen.com (Fulton Green)</li></ul></li>
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