Backup recovery is the process of restoring systems and data after disruption, such as ransomware, accidental deletion, hardware failure, or cloud service outages. It usually means locating a known-good backup, verifying it is clean and complete, and then rebuilding files, applications, or entire servers from that copy.
In cyber security, backup recovery matters because it is one of the main ways to recover without paying extortion demands or accepting long downtime. Good backups reduce the impact of encryption, data corruption, and destructive attacks, but only if they are isolated, tested, and recent enough to be useful. Recovery can fail if backups were also encrypted, deleted, or silently tampered with, so defenders should regularly test restores, protect backup accounts with strong access controls, and keep offline or immutable copies. In real incidents, attackers often try to delete backups first; defenders measure success by how quickly critical services can be restored and whether business operations resume safely.