This person is held by contract. They are not to disclose anything about Samsung, to anyone else but Samsung.
So say they lose their job or they resign, Or contract is up.
They usually have to wait a couple of years before they are allowed to discuss any of Samsung designs.
It's called a confidentiality agreement. And it's most likely a team consisting of 5 to 10 people.
But there is an interesting story on Samsung's origin that was on the Discovery Channel about 10 years ago. If I can remember, they had something to do with groceries and noodles. Wonderful story though.