I meant to say "share files" instead of "share data". But you're right, as I said, "Please correct me if I'm wrong". What I really wanted to say is that USB has been designed with so many different usages in mind that if you plug something in it, you should expect this "something" to be doing anything the USB has been designed for. And if you only want to share files and be sure it's not doing anything else, maybe you shouldn't be using USB. But at least this "problem" with USB is not as bad as with firewire or thunderbolt external storage.