Get your own server from Synology or whatever, set it up and this problem goes away.
Most of these appliances are cloud-connected, backdoored for "support purposes", and are just as likely to be injected.
or a linux setup and copy to a second drive on that. Fuck never let your shit be stored on someone else's server. Also MS knows all your files if you use windows so Linux is the only way to go though that is likely not so secure now.
I had 4 usb drives at one time on my old system. Just a usb switch "push button to activate one of them or all of them at a time. Not air gapped but manual switch that needs to be pushed to connect the drives individually.
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