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href=cid

Posted on 2004-03-25
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Last Modified: 2008-02-26
how does href=cid work? I recieved an email(junk) with link that uses cid, I tried to search internet, but couldn't find.
Thak you
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Question by:Gula
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dorward earned 50 total points
ID: 10677151
It is a way to reference other parts of a multipart mime email.

The full details are at http://ftp.ics.uci.edu/pub/ietf/uri/rfc2111.txt
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Expert Comment

by:brownj00
ID: 11005565
I also have received what look like junk emails with links that use href=cid...  

I found that this is used by the NETSKY.P virus.  The link points to another part of the unshown MIME attachment (the mal code part).  I could not see what happened until I saved the mail as .msg and then opened it with a text editor...  hidden in the normally invisible MIME multipart attachment was the text notification that my company AV had stripped the virus off.

So the short answer is it links to another part of the attachment.
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