In the event of a data breach, the following steps should be taken:
1. Immediate Containment: Isolate affected systems to prevent further data loss. 2. Notification: Inform relevant authorities, affected individuals, and regulatory bodies as required. 3. Investigation: Conduct a thorough investigation to determine the cause and extent of the breach. 4. Remediation: Implement corrective actions to prevent future incidents. 5. Review and Update Policies: Assess and improve data protection policies and procedures based on lessons learned.