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Can't some of this be patched at the USB driver level in the OS? A storage device shouldn't be acting like a keyboard, etc.

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That's not how this works.

The device acts like a USB hub which happens to mount both a keyboard and a USB drive.

So unless you ban all USB hubs then this isn't workable.

Banning USB hubs isn't really workable either. Any keyboard which has USB slots would be blocked, for instance.

I don't know if the current drivers would allow that normally. However they would allow it if you created a fake hub to route through. No way to know if there is a real hub or a fake one between the USB drive/keyboard and the computer.

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