Hello,
Can trezor be compromised by using for example a cable adapter or a different cable other than the original (For example, can the passphrase be seen if there is some kind of malware in the cable adapter)
You can’t write code into a wire.
no, it cannot…your private keys never leave the device and that is the most important thing
I understand the seed would be impossible, what about the passphrase (If only entered on the device touch screen)
same as before, nothing leaves the device…passphrase is not even stored on device