Thunderclap TL;DR: someone finally tried on PCs (over Thunderbolt) what we did on the PS4 (over PCIe) years ago. As I said at the time, IOMMUs are useless if the drivers are not written assuming the device is evil. *Nobody* writes PCIe drivers assuming the device is evil.
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You'll still have bugs, but, like, the current state of things is that nobody has even *considered* any of this. Right now it's not bugs, evil-device security is literally outside the scope of basically every PCIe driver right now.
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So Thunderbolt device authorization will prevent this attack?
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Not using Thunderbolt will prevent this attack, because I doubt there is a single Thunderbolt device driver that is secure.
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