How to discover file type from file content?

April 27, 2013 at 19:19:47
Specs: Win 7
In Internet Options, Security tab, Custom Level, one of
the many settings is "Open file based on content, not
file extension". How does that work? How can I learn
what Windows will think the file type is, based on the
file's content?

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#1
April 28, 2013 at 01:09:31
With that setting enabled, IE reads the binary signature in the file to determine what type of file it is. However, not all files have this signature, in which case the process will fail. What's more, enabling that option introduces a security loophole.

The best policy is to have it disabled.


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#2
April 28, 2013 at 02:35:32
I was under the impression -- and have been for years -- that
the security risk was to *not* enable it. Can I read about the
problem somewhere?

-- Jeff, in Minneapolis


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#3
April 28, 2013 at 09:08:47
Just for info, these are the default settings:
http://surfthenetsafely.com/ieseczo...

Always pop back and let us know the outcome - thanks


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