This tutorial will guide you to stop someone from copying your data into their pen-drives without any software.
we all have our private data and we do not want anyone to copy of our data but we can't make them say no here is a simple trick by which you will make them stop from copying your data.
Step 1: Open Group Policy Editor in You Windows Machine.
if you are using windows 8 then click the "windows key + S" to open search panel and type edit group policy which will open group policy editor for you.
if you are using older version then press the "windows key + R" to open run panel and then type "gpedit.msc".