Whats to stop a buyer from giving my Ebook to others, and me loosing sales?
There are many degrees of security in the Ebook publishing world. From no security at all, to a very high level of security. The system we use to make, deliver, and monitor the E-books we publish, is one of the most sophisticated there is, and has one of the highest forms of security there is, for our writers and their literary property. However, we have no way of knowing what the security features, are that are designed into the E-books made by others, and if there are even any at all. You will have to ask them.