bighatnohorse wrote:
A secondary external backup hard drive is necessary - AND it's a good idea to disconnect the drive when not in use. A serious infection will search out all drives up to and including "cloud" backup platforms.
Except cloud services, at least Google Drive and Dropbox that I use, maintain backup versions of all of your files. So any corruption that might occur by a "serious infection" that might have access to your cloud-based documents would be limited.
Example of version history of one of my Google Drive documents, any one of which can be pulled up to replace a current version:
Google Photos (and again I suspect that other cloud based systems are similar) maintains a copy of all deleted photos for 60 days.
I just bought a larger HD (4TB) to backup my cloud based photo and document collections, but I think the probability that it will ever be needed is near zero.