Bounty programs are very noisy. I don't even have a bug bounty program, and have several messages from confused people in my inbox asking about one. The "bugs"

Bounty programs are very noisy. I don't even have a bug bounty program, and have several messages from confused people in my inbox asking about one. The "bugs" they propose are not bugs in my programs---for example, one reports that data can be uploaded to a collaboration system, downloaded, and then executed in a user-provided interpreter---and that this interpreter may surprise the user with its behavior. Any better ideas of how to structure a bounty to get bugs and not confused users?