In the context of cyber-resilience, a "Clean Room" also known as a "Clean Room", is an isolated and secure digital environment used to recover after a cyber attack. This strategy can be part of a disaster recovery plan or computer contingency. Typically, this environment contains the latest secure copy of the organization's critical data and systems and is isolated from other systems to prevent the spread of malware or other security threats. In the event of a cyber incident, the organization can turn to this "clean" environment to restore its systems without fear that they are compromised. Often this approach is used to manage the risk of ransomware attacks, where an infection can spread rapidly through connected systems. It is important to stress that maintaining a "clean room" for cyber resilience involves ongoing effort. Such an environment must be regularly updated to reflect current changes in the organization's systems and data. This ensures that, should the need arise, operations can be resumed with as little disruption as possible.