Strengthen your Zero Trust posture—a new, unified approach to security is here
Supercharge your security operations
Accelerate security operations center (SOC) response with incident-level visibility and automatic cyberattack disruption with extended detection and response (XDR).
Learn how to close security gaps
Coordinate cyberthreat response across your entire digital estate and quickly stop cyberattacks with Microsoft Defender XDR (formerly Microsoft 365 Defender), a unified, AI-powered XDR solution.
Get true visibility with one solution
Build a unified defense across your multiplatform, multicloud environment.
Rapidly respond with XDR-prioritized incidents
Remediate cyberthreats efficiently with a complete view of the cyberattack chain informed by 78 trillion daily signals and prioritized investigation and response at the incident level.
Disrupt advanced cyberattacks at machine speed
Stop lateral movement of advanced cyberattacks, such as ransomware and business email compromise, with advanced AI capabilities that automatically isolate compromised devices and user accounts.
Unify security and identity access management
Protect your hybrid identities and identity infrastructure from credential theft and other cyberthreats with the seamless integration of Microsoft Entra ID (formerly Azure Active Directory) and Defender XDR.
Transform SOC productivity with generative AI
Respond to cyberthreats faster with step-by-step guidance, empower any analyst to build queries in natural language, and reverse-engineer adversarial scripts in seconds. Microsoft Copilot generative AI is now available in Microsoft Defender XDR.
Stop cyberattacks and coordinate response
across domains with XDR.
Optimize SOC operations with Microsoft Defender XDR
Empower security teams to effectively detect and respond to cyberthreats with expanded visibility, incident-level investigation tools, and built-in automation.
Explore Microsoft Defender XDR
Secure your multiplatform endpoints, hybrid identities, email, collaboration tools, apps, and cloud with unified XDR.
Endpoint security
Discover and secure endpoint devices across your multiplatform enterprise with industry-leading endpoint detection and response (EDR).
Identity security
Protect your hybrid identities and workload scripts with cloud-based intelligence sharing.
Email and collaboration security
Safeguard your emails, documents, and collaboration tools from advanced cyberthreats such as phishing and ransomware.
Cloud app security
Secure your cloud apps with unified visibility, data protection, and posture management.
Microsoft Defender Experts for XDR
Extend your security operations center (SOC) coverage and reduce your risk of compromise with a managed XDR service that provides triage, investigation, and incident response to quickly and effectively stop cyberattackers.
See Copilot in Microsoft Defender XDR
Unified security operations platform
Secure your digital estate with the only security operations (SecOps) platform that unifies the full capabilities of extended detection and response (XDR) and security information and event management (SIEM).
Unified portal
Detect and disrupt cyberthreats in near real time and streamline investigation and response.
Microsoft Defender XDR
Achieve unified security and visibility across your clouds, platforms, and endpoints.
Microsoft Sentinel
Aggregate security data and correlate alerts from virtually any source with cloud-native SIEM.
Industry recognition
Microsoft Security is a recognized industry leader.
Industry-leading protection
Microsoft Defender XDR (formerly Microsoft 365 Defender) demonstrated industry-leading protection in MITRE Engenuity’s independent ATT&CK® Enterprise Evaluations.
The Total Economic Impact™ Of Microsoft Defender XDR
Learn about the potential return on investment that enterprises may realize by deploying Microsoft Defender XDR (formerly Microsoft 365 Defender).1
See why customers trust XDR from Microsoft
“A single layer of detection isn’t strong enough and is prone to some level of false positive. …On the other hand, Microsoft Defender XDR (formerly Microsoft 365 Defender) correlates signals across endpoints, email, documents, identity, apps, and more.”
- Krzysztof Kuźnik, Product Owner, ING
Additional XDR resources
Microsoft XDR Infographic
Get an overview of how XDR stops cyberattacks and coordinates responses across assets.
Automatically disrupt ransomware with Microsoft Defender XDR
Learn how built-in XDR cyberattack-disruption capabilities help stop the progression of advanced cyberattacks.
Microsoft Defender XDR Blog
Explore the latest Microsoft Defender XDR updates, news, and best practices.
Benefits of Automated XDR Platforms
Get strategies for addressing the security labor shortage with AI and learn how to strengthen identity and access security with comprehensive XDR.
Protect everything
Make your future more secure. Explore your security options today.
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