Some good information here
This question gets asked by readers a lot here at Indies Unlimited: How can I protect my manuscript from being taken by someone I let read it? And as common as the question is, it’s an easy answer: you can’t.
That’s not the answer most people want to hear, but Indies Unlimited is an “Alternative Facts Free Zone,” so only the truth appears here. And the truth is, you really can’t stop someone from doing unauthorized things with a document you give them.