Navigate the "security Wild West" with Microsoft Defender for Office 365, your shield against the complex and rapidly evolving cyber threats. Written by a cybersecurity veteran with 25 years of experience, including combating nation-state adversaries and organized cybercrime gangs, this book offers unparalleled insights into modern digital security challenges by helping you secure your organization's email and communication systems and promoting a safer digital environment by staying ahead of evolving threats and fostering user awareness. This book introduces you to a myriad of security threats and challenges organizations encounter and delves into the day-to-day use of Defender for Office 365, offering insights for proactively managing security threats, investigating alerts, and effective remediation. You’ll explore advanced strategies such as leveraging threat intelligence to reduce false alerts, customizing reports, conducting attack simulation, and automating investigation and remediation. To ensure complete protection, you’ll learn to integrate Defender for Office 365 with other security tools and APIs. By the end of this book, you’ll have gained a comprehensive understanding of Defender for Office 365 and its crucial role in fortifying your organization's cybersecurity posture.