Dictionary · Defensive Security
Backup
Recovery · Beginner
A restorable copy of data kept so it can be recovered after loss, corruption, or encryption by malware. A copy that has never been restored is an untested hope.
Backups support availability and recovery. At least one copy should be offline or otherwise protected from being encrypted along with the original files.
Example: Nightly backups of the file server are stored on immutable storage, and one restore is tested every month.
Common misconception
- A sync folder is not always a backup. If deletion or encryption replicates, you may have copied the damage.