Isolation in cybersecurity refers to the process of disconnecting or segregating affected systems, devices, or network segments from the rest of the network to prevent the spread of malware, ransomware, or other security threats. This containment strategy is often employed when a system is suspected of being compromised or infected, allowing security teams to investigate and remediate the issue without risking further contamination. Isolation can be achieved through various means, such as disabling network interfaces, applying firewall rules, or moving systems to separate VLANs. By isolating threats quickly, organizations can minimize damage, protect sensitive data, and maintain operational continuity while addressing security incidents.