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But for all its popularity and appeal, the iPad never has quite cleared the bar Jobs set for it, which was to be "far better" at some key tasks than a laptop or a smartphone. The iPad may have been "far better" when it was first released, but smartphones have come a long way. The iPhone 6 and 6 Plus and their Android equivalents are now convenient enough for most mobile computing tasks that there's no need to carry around a tablet as well. That helps explain why iPad sales have plateaued, rather than continuing to ascend to the stratospheric levels of the iPhone. "The iPad remains an impressive machine. But it also remains a luxury item rather than a necessity," concludes Oremus. "Again, by most standards, it is a major success. Just not by the high standards that Jobs himself set for it five years ago."
Hudson's bootkit takes advantage of a vulnerability in how Apple computers deal with peripheral devices connected over Thunderbolt ports during a firmware update. In these cases, the flash is left unlocked, allowing an Option ROM, or peripheral firmware, to run during recovery mode boots. It then has to slip past Apple's RSA signature check. Apple stores its public key in the boot ROM and signs firmware updates with its private key. The Option ROM over Thunderbolt circumvents this process and writes its own RSA key so that future updates can only be signed by the attacker's key. The attack also disables the loading of further Option ROMs, closing that window of opportunity.