Security tab is missing when in properties of a folder in windows
So to see and unhide the Security tab, just use the following
steps:
1. Launch Windows Explorer or My Computer.
2. lick on the Tools at the menu bar, then click on Folder
Options.
3. Click on View tab.
4. In the Advanced Settings section at the bottom of the list,
uncheck and unselect (clear the tick) on the “Use simple file sharing
(Recommended)” check box.
5. Click OK.