Hi
Please have a look at this Old Forum post:
Link: http://help-forums.adobe.com/content/adobeforums/en/experience-manager-forum/adobe-experience-manage...
// It isn't easy to prevent users not to use copy&paste, because you cannot deny it via ACLs. If a user can create a new page, she can do it either manually or by using copy&paste. The only chance I see is to disable the copy&paste menu items.
I hope this would act as some help.
Thanks and Regards
Kautuk Sahni
Kautuk Sahni