by Ashok Dhamija on WordPress.org
Copy protect contents by disabling mouse and keyboard commands, or by emptying copied text, or show copyright text with copied text, and more.

TG Copy Protection plugin settings interface (Settings -> TG Copy Protection).
TG Copy Protection plugin provides various ways to protect the contents of your website.
Once installed, the settings of the TG Copy Protection plugin would be available for being changed from the ‘TG Copy Protection’ option in the ‘Settings’ menu on the admin screen (back-end) of your WordPress website or blog.
Usually, every website allows for free copying of its contents. However, there may be certain websites which may not be willing to allow copying of its contents due to various reasons. TG Copy Protection plugin is meant for such websites which want to block copying of its contents to a normal visitor. This plugin allows you to copy-protect the content of your WordPress website or blog in one of the following manners and you can change this setting at any time:
Unlike other plugins which offer copy protection, TG Copy Protection plugin has an in-built option that allows disabling copy protection, i.e., it allows copying of text from your website. So, there is no need to uninstall or deactivate the plugin if you want to disable copy protection for some days or some time. Of course, if you want to completely disable copy protection forever, then you may like to deactivate / uninstall this plugin.
TG Copy Protection plugin works in the background of your website in the most unobtrusive manner. You only have to select some basic settings once and it is ready to start working to protect the contents of your website. Of course, you can change these basic settings any time later.
This plugin works on all WordPress websites or blogs. It is a very light-weight plugin.