Good-Person
Captain Junkie
If you have a business idea which you claim is your own, it's better to work on it immediately and make it to become a physical something, it's the only way you can guarantee that the idea wouldn't be stolen. If it's something that you have only in your head, another person can come up with it.
Yes, this is what I suggested in one of my other posts. You could write down an idea and create a digital signature in order to protect the idea in the first place. Moreover, I also think that a person should not even discuss ideas in the first place. No one can steal mind from your mind.