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I have created a file asd.asd:

enter image description here

I want to know when i email this file directly to other people, what kind of information (Date created / Date modified / Owner / Computer) will be exposed.

I am aware that I can "Remove properties and personal information". This question is: even if i do not specifically remove properties and personal information, will they be visible to the second party that downloaded my file?

Also, is there any difference in the details if instead of emailing the file directly, i zipped it up first and email it.

You can download the file at http://qweop.com/asd.zip

(I'm not talking about .txt files, but rather files in general)

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2 Answers 2

up vote 3 down vote accepted

As mentioned in Ignacio's answer, email only contains the contents of the file. But archives are different. This is the result of unzip -ql asd.zip (which lists the file contents).

  Length      Date    Time    Name
---------  ---------- -----   ----
       23  2011-07-12 14:10   asd.txt
---------                     -------
       23                     1 file

The time I guess matches with the modified date.

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does it show the date created, Owner, and Computer ? –  Pacerier Jul 12 '11 at 21:15
    
@Pacerier No, it does not. –  Bernhard Heijstek Jul 12 '11 at 21:16
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When emailing a file, only the contents and filename will be seen, and the filename even can be faked by the email program. Since .txt files don't retain any personal information within them that wasn't typed in by the user, the other side will see nothing you don't intend them to if the file is attached directly. When placed in an archive, it is possible for the archive program itself to provide additional metadata about the file within the archive.

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i'm not talking about .txt files, but rather files in general –  Pacerier Jul 12 '11 at 21:14
    
My answer still stands. –  Ignacio Vazquez-Abrams Jul 12 '11 at 21:16
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