Professionals backup to grandfather drives. Meaning, backups on different hard drives. Let's say your current daily backup saves to another drive and both are infected. If you regularly backup the backup drive weekly to a third drive, then that third drive is unaffected. At most you lose a week's worth of new data. It's always a good idea to periodically swap backup drives and store one away as a backup to the backup (store in a safe). Especially if your daily backup is near your work drive; accidents do happen that can take out both drives. Even better, store a backup drive off site in case of fire or theft.
Just got nasty thing at the office computer.
Blank black screen with just movable cursor at the Win7 boot. Backups, restore don’t work. Wonder if that’s it.
Took me three days to get rid of it and restore sanity.