on local backup, I have to select an existing disk for the backup destination, meaning that this disk is accessible by anyone else: humans or cryptolockers viruses. So those viruses can also crypt my backup and make it unavailable.
Is there a way to back up on a disk not mounted on the OS, like for example the Acronis Secure Zone mechanism? (I’m on Windows 10).
I was thinking of mounting the drive on pre-script, and unmount it in post-script, but the security risk is the same: if I have a crypto, this one could access the files when the drive is mounted, and crypt by backup.
To my mind, the best method would be to have a raw disk, used by Duplicati to store the data on a way only him can read them (crypted filesystem or whatever?)
So, is there a method to bak up my data on a local disk, that would not be visible for other executables / potential viruses?