I read about the new version of duplicati and so far it sounds very promising! I thought I’d give it a try but the following question occured to me:
Is it possible to protect my duplicati backups on a remote backup (e.g. a NAS) against deletion in case my computer is hacked and my (non-root)login credentials for the NAS are stolen? An example would be ransomware that infects my computer and then also encrypts the backups on the NAS.
As a solution I was thinking about something like running a cron job every night on the NAS that would set the permissions for all new backups to read only for my backup user account. Would duplicati still be able to work normally under such circumstances? What I want to achieve could be seen as a kind of “write only backup”