Fwd: [Esa-l]Webbugs using sound not gifs?

Simon Matthews simon at paxonet.com
Tue Jul 10 10:41:06 PDT 2001

Looks like I completely screwed up typing the email.

Anyway, what I was trying to say was that:
1. I received an email from a sender that I did not recognize.
2. When looking at the full text of the html, I saw what I thought was a 
sound to be played at zero volume.
3. I suspect the sound was pulled from a remote site, with a long (possibly 
unique) URL.
4. Perhaps this could be used to track email reading, in the same way as 
webbugs can?


>Delivered-To: simon at paxonet.com
>Delivered-To: esa-l at spconnect.com
>X-Authentication-Warning: linsim.coreel.com: simon owned process doing
>   -bs
>From: Simon Matthews <simon at paxonet.com>
>X-X-Sender: <simon at linsim.coreel.com>
>To: "John D. Hardin" <jhardin at impsec.org>
>Cc: <esa-l at spconnect.com>
>Subject: [Esa-l]Webbugs using sound not gifs?
>Sender: esa-l-admin at spconnect.com
>X-BeenThere: esa-l at spconnect.com
>X-Mailman-Version: 2.0.3
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>Date: Tue, 10 Jul 2001 08:23:04 -0700 (PDT)
>I received a strange email that I think very long, indicating that it
>could be unique, hence the sound could have been used to track reading of
>What do you think?
>E-mail Security Announce list mailing list
>E-mail Security Announce list at spconnect.com

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