Introducing the new unified XDR and SIEM experience
Benefit from unified Microsoft Sentinel and Microsoft Defender XDR, with more comprehensive features, automation, guided experiences and curated cyberthreat intelligence.
Defend against cyberthreats with a unified security operations platform
Secure your multicloud, multiplatform environment
Get real-time protection across Azure, Amazon Web Services, and Google Cloud Platform as well as Windows, Mac, Linux, iOS, Android, and Internet of Things (IoT) platforms.
Get complete visibility into cyberthreats
Uncover sophisticated cyberattacks such as human-operated ransomware using machine learning-based detections powered by global cyberthreat intelligence.
Investigate and respond faster
Accelerate incident response and stop breaches faster with a unified investigation experience and built-in automation.
See how the new user experience can transform the way you detect, investigate, respond to, and protect against cyberthreats.
Why move to a unified security operations platform?
By bringing together our extended detection and response (XDR) and security information and event management (SIEM) solutions in a single, unified security operations platform, security teams get a true end-to-end experience for detecting, investigating, responding to, and protecting against cyberthreats. Now, there’s no need to have disparate tools with duplicate capabilities—the full power of XDR and SIEM backed by Microsoft AI and threat intelligence is built into a single platform.
Supercharge your cyberthreat protection with a unified platform
Our security operations platform breaks down security silos and enables security teams to detect
and disrupt cyberthreats in near real time, streamline investigation and response,
and provide guided recommendations to help prevent repeat and future cyberattacks.
Manage your defenses from a single place
Work from a unified incident queue, making triage and prioritization more straightforward. Investigate incidents without needing to switch portals with a single entity map. Hunt for cyberthreats by building playbooks, or ask Microsoft Security Copilot for help translating natural language into KQL. Disrupt cyberattacks beyond Microsoft XDR workloads—now including some business applications.
Microsoft Defender XDR
Build powerful protection with unified visibility, investigation, and response across all end-user assets and cloud infrastructures with a native XDR platform. Microsoft Defender XDR improves response effectiveness, stops lateral movements, and unifies security and identity access management, to help you protect your organization more effectively.
Detect breaches and anomalies, investigate cyberthreats, and remediate issues across all your security data sources. Microsoft Sentinel is natively integrated with Microsoft Defender XDR, providing increased context and single-click remediation using built-in automation.
Discover new integrations with Microsoft Security Copilot
Use natural language queries to summarize investigations and explore built-in threat intelligence with Microsoft Security Copilot, now in early access.
Three Reasons to Shift to Integrated Threat Protection
Learn how you can make your security operations center more proactive, efficient, and cost-effective with integrated SIEM and XDR.
Security operations maturity self-assessment tool
Find out if your security operations center is prepared to detect, respond to, and recover from cyberthreats.
Microsoft 365 E5, A5, F5, and G5 customers can save on Microsoft Sentinel.
Microsoft Security is a recognized industry leader.
The Forrester New Wave™: Extended Detection And Response (XDR) Providers
Microsoft Defender is named a Leader in The Forrester New Wave™: Extended Detection And Response (XDR) Providers, Q4 2021.3
Leader in MITRE ATT&CK
Microsoft Defender XDR (formerly Microsoft 365 Defender) demonstrates industry-leading protection in the 2022 MITRE Engenuity ATT&CK Evaluations.
Consolidation can reduce costs and risk of cyberthreats
The Total Economic Impact™ Of Microsoft Defender XDR (formerly Microsoft 365 Defender)6
Learn how the study found a 242 percent ROI over three years and how SecOps efficiency added USD$6M to the bottom line.
Discover how customers safeguard their organizations with integrated cyberthreat protection from Microsoft
Additional cyberthreat protection resources
Get the latest information about cyberthreats
Stay ahead of advanced, persistent cyberattacker trends with guidance, commentary, and insights.
Microsoft Mechanics overview
Join Microsoft Security CVP Rob Lefferts for a deeper look at Microsoft Defender.
CISO Insider: Issue 3
Learn how CISOs are moving to a cloud-centric model, bringing along everything in their digital estate from on-premises systems to IoT devices.
See the latest cyberthreat briefs for concise, actionable, and relevant analysis of current and past cybersecurity threats.
GARTNER is a registered trademark and service mark of Gartner, Inc. and/or its affiliates in the U.S. and internationally, and is used herein with permission. All rights reserved.
Gartner is a registered trademark and service mark and Magic Quadrant is a registered trademark of Gartner, Inc. and/or its affiliates in the U.S. and internationally and are used herein with permission. All rights reserved.
Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the highest ratings or other designation. Gartner research publications consist of the opinions of Gartner’s research organization and should not be construed as statements of fact. Gartner disclaims all warranties, express or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.
-  Gartner Magic Quadrant for Security Information and Event Management, Pete Shoard, Andrew Davies, and Mitchell Schneider, 10 October 2022.
-  The Forrester New Wave™: Extended Detection And Response (XDR) Providers, Q4 2021, Allie Mellen with Joseph Blankenship, Alexis Tatro, and Peggy Dostie, October 13, 2021.
-  The Forrester Wave™: Security Analytics Platforms, Q4 2022, Allie Mellen with Joseph Blankenship, Caroline Provost, and Kara Hartig, December 14, 2022.
-  A commissioned study conducted by Forrester Consulting, August 2022.
-  A commissioned study conducted by Forrester Consulting, April 2022.