Shadow copies are Windows recovery snapshots created by Volume Shadow Copy Service (VSS). They preserve earlier versions of files and system data, which can help administrators restore data after accidental deletion, corruption, or ransomware encryption. Because they are built into the operating system, shadow copies are often one of the first recovery options a defender checks after an incident.
Ransomware operators know this. Many families try to delete shadow copies with commands such as vssadmin delete shadows or by stopping VSS-related services, so victims cannot easily roll back files. Protecting against this tactic means more than hoping snapshots exist: keep offline or isolated backups, monitor for suspicious VSS commands, restrict administrative access, and test restoration procedures regularly. If shadow copies are removed, recovery becomes much slower and the attacker’s leverage increases.


