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Even a set of sophisticated udev rules will not protect against sabotage. Think USB killer for example. But you can already dispense with the keyboard and the mouse by investing in a touch screen. Instead, you use a virtual keyboard and the mouse is integrated to the touch screen. So you have already eliminated two devices. USB mass storage, do you really ...


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Not really. If you can create own hardware and own kernel modules, restricting access of kernel modules to devices, you can make an device communicating to PC via an optical channel (to prevent power analysis attacks and glitching), embed a unique private key into each device, write the firmware and drivers the way making it authenticate each operation, ...


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