Native protection for Office 365
Boost productivity, simplify administration, and lower total cost of ownership with built-in protection.
Protect all of Office 365 against advanced threats like business email compromise and credential phishing. Automatically investigate and remediate attacks.
Microsoft Defender for Office 365 has been named a Leader in The Forrester Wave™: Email Security, Q2 2021.
Microsoft Defender for Office 365 supports organizations throughout the lifecycle of an attack.
Prevent a wide variety of volume-based and targeted attacks including business email compromise, credential phishing, ransomware, and advanced malware with the help of a robust filtering stack.
Detect malicious and suspicious content and correlate attack patterns to identify campaigns designed to evade protection—all using industry-leading AI.
Track attacks across Office 365 with advanced hunting capabilities that help identify, prioritize, and investigate threats.
Amplify your security team’s effectiveness and efficiency with extensive incident response and automation capabilities.
Jason Youngers, Director and Information Security Officer
Experience Defender for Office 365 and other security products with a Microsoft 365 E5 Security trial.
Start using Defender for Office 365, included with a Microsoft 365 E5 purchase.
See how Defender for Office 365 can help protect your Office 365 environment against advanced threats.
Microsoft Defender for Office 365 helps organizations secure their enterprise with a comprehensive slate of capabilities across prevention, detection, investigation and hunting, response and remediation, awareness and training, and secure posture.