Determine the way that a file transferred to the PC

I wonder how to know how the file transferred to the PC ??

IS it from external storage ?? or via network ??

Check the NTFS file permissions. Are they inherited or not? One way to find out if the file was copied, moved from another NTFS device or not.

Look to see if the end user opened up that file!

Link files and Jump List have all kinds of information on the file that it references such as a MachineID. Check out Harlan Carvey's post
http//windowsir.blogspot.com/2011/12/jump-list-analysis.html