True, although even locally you can mitigate most of the effect by giving access to each program only to a pseudo-filesystem; your system will be as secure as your administrator access in that case.
Mixing both solution would probably work well, as you can transfer incremental backups from a filesystem history to a remote, then you only have to protect your remotes.
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If your backup versions are stored locally, they’re also susceptible to a ransomware lockdown. They’d need to be backed up in a similar fashion.
True, although even locally you can mitigate most of the effect by giving access to each program only to a pseudo-filesystem; your system will be as secure as your administrator access in that case.
Mixing both solution would probably work well, as you can transfer incremental backups from a filesystem history to a remote, then you only have to protect your remotes.