Microsoft Security

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About Microsoft Security

Our security operates at a global scale, analyzing 6.5 trillion signals a day to make our platform more adaptive, intelligent, and responsive to emerging threats.



New to Microsoft 365 Defender? Head over to the Microsoft 365 Defender interactive guide for a hands-on tour.

Microsoft Security training and resources

Microsoft 365 Security Center learning paths (Microsoft Learn)

Latest news from the Microsoft Security blog

Noteworthy in Microsoft Security

365 Training Portal feedback

Our goal is to keep the training portal as up-to-date and useful as possible. Please use the feedback form to let us know about any broken links or updated resources, or to suggest additional resources.