Have you ever tested your backups? This is a question that keeps surfacing and, much like patching regimens, people seem to pay it little more than lip service. Backups are there for your benefit as well as that of your users / customers. Not having a sound storage and encryption regimen is something that one can ill afford. If you are taking backups, be sure to test them regularly to ensure they would actually work if and when you might need them. For those of you who have transitioned to a cloud environment, I’ll talk to you about locking down your systems another time.”]
Source: https://www.csoonline.com/article/3122130/backups-arent-just-for-smoking-crater-scenarios.html

