Now this trick will help you in protecting your files. You need to download latest version of WinRAR (ver. 4 or above) and install it first. After that follow the instruction given below:
Step 1: copy your private files into the folder.
Step 2: right click on the folder and click on add to file.Rar.
Step 3: now copy the rar file on the desktop and rename it to 2.
Step 4: after that, copy an image file to desktop and rename it 1.
Step 5: now you have to open run command and type cmd.
Step 6: In CMD window type cd desktop.
Step 7: after that type “copy /b 1.jpg + 2.rar file.jpg” (without quotes).
All done. Now a file naming file.jpg has been created on the desktop. If you directly open the file you see the image but if you open that with WinRAR you can see your private file and the special thing about this that you can carry it using pen drives.