I have a NAS that I share files with and it's used as a backup solution. About a week ago, my Netbook got infected with ransomware. All my files on the Netbook (and the majority of them on the NAS) were destroyed. But my PC didn't get attacked and since I usually do manual backups, I didn't lose anything. So to start over, is there a good backup strategy for a NAS? So this doesn't happen again.