Development brief
CISA published an updated StopRansomware Guide in October 2023 through the Joint Ransomware Task Force. The document joined preparation, prevention, data-extortion concerns and response in one operational resource. Its backup advice was more exacting than simply buying storage: maintain offline, encrypted copies of critical data and test their availability and integrity under a disaster-recovery scenario. The guide's update is a historical publishing event, not a claim that every organization adopted its recommendations that month.
Why backups alone are insufficient
A backup job can report success while the only copy remains reachable from a compromised administrative account. A restore can fail because keys, documentation, application dependencies or staff access are missing. Even a technically intact copy may restore too slowly to support critical operations. The guide therefore places testing next to isolation. It also treats data theft as a separate concern: successful restoration cannot retract information already exfiltrated. A response plan needs to preserve evidence and decide whether and how to reconnect systems after containment.
Defensive reading
Choose a small set of essential services and rehearse recovery from an isolated copy. Record restoration time, missing dependencies and the people needed to approve each step. Verify that backup administrators and production administrators do not share one unrestricted path. Keep a communications route available when normal email or identity systems are down. During a suspected incident, avoid erasing logs or overwriting compromised systems before responders understand the scope. Test the plan with business owners who know which data must be current and which temporary manual process is safe.
What remains bounded
The guide is general defensive guidance; it cannot tell a reader whether a particular ransom demand, system or insurance decision is safe. This is not current legal or incident-specific advice. Its lasting contribution is a practical standard of evidence: a recoverable copy is one that has been restored in a representative exercise, with its dependencies and limitations documented. The word backup describes a file; recovery describes a demonstrated organizational capability.