Pic-defender is aplugin to defend your pictures, images from source stealing, source copying. The plugin will:
Hide your pictures
Hide your pictures’ urls
And this plugin will protect your picture from:
Right click – save: If someone tries right click and save, they will get an empty pictures instead of origin picture
Copy, paste source of pictures: The source only show in domains of your choice, other than that, they will get a warning.
Plugin site: http://www.forexp.net/wordpress-plugins/plugins/pic-defender/