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Posted on 2007-10-10
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I have noticed that within MS Outlook (a user on exchange server), anybody can edit the message and save it without any indication that it's been amended (that I can see).

This change is then synchronised back to the exchange server so the amended message is shown there too.

Additionally I can send an email then edit and save it replacing the original on both my local drive and the exchange server.

Surely that is a massive security risk within organizations?

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Question by:pma111
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Expert Comment

by:bluetab
ID: 20049685
When you open an email that you have already sent or received you can't make changes to it unless you are forwarding it or replying, but the original stays intact.  If you receive an email with an attachment and you open that attachment then close the email Outlook pops up with a window asking if you want to save the changes.  This is just a little oddity within Outlook.  Changes aren't being made to the email.  You can save the attachment to a location on your hard drive or server, but the attachment remains on the original email.

When you make changes to an email you received and then save it what kind of changes are you making?
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by:pma111
ID: 20054817
Any just to demonstrate it can be done
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by:pma111
ID: 20054851
>you can't make changes to it unless you are forwarding it or replying, but the original stays intact

If I right click an email, edit source, then save. It has changed. I can then forward this on to anybody I want. So I received an email saying you are eligable for $100 just send this on to your manager, I could edit this to $10000 and send it to them. And I cant see where they will notice its been modified?
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by:pma111
ID: 20054853
I could also edit it, then just save the changes, and it would be sat in my inbox as I changed it.
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bluetab earned 1000 total points
ID: 20063313
I see what you are doing and how you are doing it now.  It does appear to be a loophole in Exchange.  I don't have an answer for you right now.
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by:pma111
ID: 20064047
'Some' emails remove the right click > edit message facility, but it is still incredibly easy to make amendments to them and they appear as though they are originals
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