“Oh no! I’ve got a ransomware notice on my workstation. How did this happen?”

“Let’s figure that out later. First, apply the backup from a few minutes ago, so we can continue to work.” Now that wasn’t so painful, was it? Having a rollback solution or a recent backup could make this ideal post ransomware–infection scenario possible. But which technology could make this work? And is it possible today?

https://blog.malwarebytes.com/security-world/business-security-world/2018/12/using-the-blockchain-to-create-secure-backups/