Re: web beacons

[DDB Lists]

I got images like this:

<img src="http://www.mailmate.be/imagx/6.4891.1927023596/bcn.jpg";>

this contains the mail id, the person's id and a checksum digit

Server side is a url rewriting mechanism that changes the link to
imagx.cfm?linkid=... &img=bcn.jpg and then a cold fusion page to take care
of the rest

----- Original Message -----
From: "Justin Greene" <[EMAIL PROTECTED]>
To: "CF-Talk" <[EMAIL PROTECTED]>
Sent: Monday, January 13, 2003 7:54 PM
Subject: RE: web beacons


> The more sophisticated web bugs do not use a parameter, but instead
actually
> use the filename itself to identify the individual and each email has a
> different image being requested.  Quite effective in HTML email and on web
> pages.
>
> Justin
>
> > -----Original Message-----
> > From: Lee Fuller [mailto:[EMAIL PROTECTED]]
> > Sent: Monday, January 13, 2003 1:24 PM
> > To: CF-Talk
> > Subject: RE: web beacons
>
> > Yep.. One of the ways that spammers, these days, collect info
> > on valid email
> > addresses when using HTML email campaigns.  You simply view
> > the email, and
> > BAM.. they know your email address is good.
> >
> > Old news
> >
> >
> >
> > | -----Original Message-----
> > | From: Costas Piliotis [mailto:[EMAIL PROTECTED]]
> > | Sent: Monday, January 13, 2003 10:04 AM
> > | To: CF-Talk
> > | Subject: RE: web beacons
> > |
> > |
> > | Oh yeah, and you can pass url parameters to that image as
> > | well... So let's say you send an email to employeeid 145.
> > |
> > | You can add a parameter the the src of the gif file in the
> > | html email you send him as such:
> > |
> > | <img src="http://www.myserver.com/image.cfm?id=145";>
> > |
> > | Then in the source... Of image.cfm, something like this
> > | appears: <cfcontent file="foo.gif"
> > | type="application/whatever"> <cfquery datasource="#application.ds#">
> > | insert into someTable (employeeid, date)
> > | values (#val(url.id)#, getdate())
> > | </cfquery>
> > |
> > | -----Original Message-----
> > | From: Costas Piliotis
> > | Sent: Monday, January 13, 2003 10:00 AM
> > | To: CF-Talk
> > | Subject: RE: web beacons
> > |
> > |
> > | Easy.
> > |
> > | <cfcontent file="foo.gif" type="application/whatever">
> > | <cfquery datasource="#application.ds#">
> > | ...tracking query here...
> > | </cfquery>
> > |
> > | You include the image, and some server-side code to process
> > | it.  Done it a few times...
> > |
> > | -----Original Message-----
> > | From: sebastian palmigiani [mailto:[EMAIL PROTECTED]]
> > | Sent: Monday, January 13, 2003 9:52 AM
> > | To: CF-Talk
> > | Subject: web beacons
> > |
> > |
> > | Yahoo is using something called web beacons. Can anyone
> > | simply explain how a single pixel gif is used as a web beacon.
> > |
> > http://privacy.yahoo.com/privacy/us/pixels/details.html
> >
> >
> > Sebastian
> >
> >
> >
> >
> >
> 
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