1.Close or Clear traces of browsing files

Even though the snoopers can not directly browse the contents of the document,but they also can view your recently used files to know your work through the File menu in Word or Excel.Even the temporary list listed  the files deleted by you.So it is best to turn off the feature.

For example , in Office 2012 Word or Excel, select the "File" menu, then select "Help" - "Options" item, and then enter the "Advanced" tab to modify"display this number of Recent Documents "selection box figures to 0 in the "show".Now it will not show the most recently used files.  Read more