Yup. Even the dark fiber back haul networks used by data centers that were once thought to be private are now being encrypted (Google, Microsoft, etc have menti

Yup. Even the dark fiber back haul networks used by data centers that were once thought to be private are now being encrypted (Google, Microsoft, etc have mentioned this). This is exactly what PRISM was, not taking data from servers, but tapping into the data networks between them and siphoning off whatever the NSA wanted. And it just so happens that to mirror a fiber optic line you use a crystal prism.