What are the biggest threat vectors when using krux seed signer on yahboom like this:

- only connected to computer once, to flash firmware

- generate “good” entropy from camera (700k+)

- print QR code with attached printer.

- scan to get private key on boot up

- sign pbst from sd card

- transfer signed transaction on SD card to pc

- broadcast from sparrow on pc

Paranoid threat I see is:

- stuxnet attached to usb any time it was connected, so krux could get infected

- wrench attack until I multisig