I understand, that Qubes compartmentalizes OS and parts of OS don't have access to other parts of the OS. So even if you had virus in your firmware of a network card, it wouldn't matter. I know firmware viruses are rare, but still better safe than sorry. I am looking for safe OS to do online banking from. If i use live usb of QUBES, does that protect me against all firmware viruses ? I wonder. Even there is like 0.2% chance of being infected with it. Also i can't disable all my disks in BIOS, could that be problem ? I mean if i use live-usb and don't boot my main OS, when usb is plugged in. So my main OS can't compromise Qubes. And even if disks were enabled and i boot up Qubes from live usb, i am not sure if it could get infected, because these viruses has to be loaded somehow right ? But if they are passively on the disk and you launch 2nd OS from live-usb, not sure if it could get infected like this. I wanted to dedicate my old pc for online banking, but Qubes doesn't work there.
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