What do you mean by secure? Like, no one stealing your internet kinda secure?
Or maybe, no one stealing your information kind of secure. Well, the stealing your internet part is pretty much up to your router, as you set up your security through that. And about your information...why would you manage your bank accounts and w/e on your Wii? Dont you have a computer for that!!! lol, as far as i know, Oprah is pretty secure.