Ransomware attacking backup storage drives.

[Doug]

New ransomware attacks target your NAS devices, backup storage. Ransomware attacks targeting these devices have surged in recent months.

I seems to make sense to have your data backed up on at least two USB external hard drives, along with other sources. After a full backup, it might make sense to disconnect the hard drive when it isn't being backed up on. 

https://www.zdnet.com/article/new-ransomware-attack-targets-your-nas-devices-backup-storage