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Microsoft Security

Explore the latest in AI-powered cybersecurity capabilities announced at Microsoft Secure.  Watch on demand >  Read the announcement >

Microsoft Defender

Get ahead of threat actors with integrated security solutions.

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Introducing the new unified XDR and SIEM portal

Get comprehensive features, automation, guided experiences, and threat intelligence with Microsoft Sentinel and Microsoft Defender XDR, which combine extended detection and response (XDR) and security information and event management (SIEM) capabilities to deliver a unified security operations platform.

Defend against malicious cyberthreats

The Microsoft Defender family offers comprehensive threat prevention, detection, and response capabilities for everyone—from individuals looking to protect their family to the world’s largest enterprises.

For enterprise

Prevent, detect, and respond to attacks across devices, identities, apps, email, data, workloads, and clouds.

For business

Get enterprise-grade endpoint protection that’s cost-effective and easy to use—and designed especially for small-to-medium businesses.

For individuals

Seamlessly protect your personal data, computers, and phones against malicious threats with a simplified app for you and your family.

Explore Microsoft Defender products for enterprises

Microsoft Defender XDR (formerly Microsoft 365 Defender)

Get unrivaled threat intelligence and automated attack disruption of the most sophisticated attacks with a unified extended detection and response (XDR) solution.

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Microsoft Defender for Cloud

Find weak spots across your cloud configuration, strengthen the overall security posture of your environment, and protect workloads across multicloud and hybrid environments from evolving threats with XDR capabilities.

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Microsoft Defender for Business

Increase security with enterprise-grade endpoint protection for small and medium-sized businesses that's cost effective and easy to use.

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Microsoft Defender for individuals

Get online security protection for individuals and families with one easy-to-use app.1

Microsoft Defender homepage on desktop and mobile.

Blog posts and events


The Defender's Watch

Join host Rob Lefferts in Episode 2 of this webinar series to learn how to prepare for evolving identity-based threats.


Introducing Microsoft Defender for individuals

See how Microsoft Defender for individuals is making the world a safer place.


Microsoft Digital Defense Report

Defend your organization using deep threat analysis and the latest security intelligence and strategies.


The Security Insider

Dig into the latest cybersecurity research and learn strategies to defend yourself from emerging threats.

Protect everything

Make your future more secure. Explore your security options today.

[1] App is available on Windows, macOS, Android™, and iOS in select Microsoft 365 Family or Personal billing regions.

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