NSA whistle-blower Edward Snowden and noted hacker Andrew "Bunnie" Huang on Thursday published a paper on their collaboration to design a smartphone case that will protect user privacy. The pair developed a prototype compatible with the 4.7-inch iPhone 6, as it's "driven primarily by what we understand to be the current preferences and tastes of reporters," the paper states. "We assume any platform ... can and will be compromised by state-level adversaries."