I have a Synology NAS, with several shared folders, and several users. These users have on their PC a network drive letter, linking to their NAS shared folders (using their credentials) + the "everybody" folder.
I also have an Hyper Backup task set up, which creates a backup every night of all my NAS content, and stores it in a /Backup folder only "admin" user (me) has access to. /Backup is on the same volume as the other shared folders. I usually keep the last 5 backups.
My questions : if one of my (regular, non-admin) users get a cryptovirus, leading to data corruption on their PC & NAS folders : - is there any scenario where the /Backup folder could be compromised too ? (knowing the users does not have access to it) - am I correct to assume that, if the backup task was succesfull, i'll be able to revert corrupted data to previous save, thus making it healthy again ?