I remember reading this story a year or so ago in Bloomberg. The source was protected by only being accessible from their internal network. The company actually

I remember reading this story a year or so ago in Bloomberg. The source was protected by only being accessible from their internal network. The company actually put a lot of time and effort into making sure they couldn't be hacked externally before they would start working with the Chinese. That is why they ultimately had to pay an insider to steal the source