# Incident Response & Defense Plan ## 1. Threat Detection & Analysis The ransomware encryption indicates a severe breach of the Customer SQL Database Cluster. Initial analysis suggests unauthorized lateral movement culminating in payload execution. We must immediately isolate the cluster to prevent network-wide propagation and preserve volatile memory for forensic analysis. ## 2. Containment Strategy - Disconnect the SQL Database Cluster from the main corporate network and internet. - Disable all compromised user accounts associated with the anomalous database queries. - Reroute legitimate traffic to the read-only disaster recovery site to maintain partial business continuity. ## 3. Eradication & Recovery - Wipe the affected servers and rebuild the OS from known clean, golden images. - Restore database records from the most recent offline, immutable backup. - Deploy enhanced Endpoint Detection and Response (EDR) agents before reconnecting to the network. ## 4. Compliance Alignment & Hardening - **Protect (PR.AC-3):** Enforce strict network segmentation and Principle of Least Privilege for database access. - **Respond (RS.CO-2):** Report the incident to relevant stakeholders and legal teams as per the communication plan. - **Recover (RC.RP-1):** Update the disaster recovery plan based on lessons learned to reduce future recovery time.