immutable backup

I use both PBS and restic for backup on different systems. I'm very happy with both tools for their job. In the restic documentation I read about a possible threat and wonder how it is handles in PBS. I have not found any mention of the threat or a mitigation in the documentation of PBS. Attack...

Hi every one, All is in the title or almost ;-) Is it possible to configure it ? If yes, how can I do it ? Regards PS : My environment : Proxmox and Proxmox Backup