The final part of a three-part series on security automation focuses on the "Respond and Protect" phase, which aims to rapidly address account compromises by leveraging automation. With over 100,000 breaches involving compromised user credentials reported in the 2020 Verizon Data Breach Investigations Report, the necessity for swift action is emphasized. The article outlines a workflow that includes user lockout, case updates, and automated user communication using tools like Microsoft Graph API for account lockout and Slack for user notifications. This approach not only ensures immediate response and user acknowledgment but also updates relevant cases in platforms like TheHive and Jira. By automating these processes, organizations can significantly reduce their exposure window, enhancing their security posture against threats in a matter of minutes rather than days, thereby mitigating risks associated with compromised accounts.