Introducing a new era of security operations
Move faster with Microsoft Sentinel and Microsoft Defender XDR, a security operations (SecOps) platform that brings together the capabilities of XDR and SIEM.
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 full visibility into cyberthreats
Uncover sophisticated cyberattacks, such as human-operated ransomware, using machine learning-based detections powered by global threat 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 transforms the way defenders detect, investigate, respond to, and protect against cyberthreats.
Why move to a unified security operations platform?
Get a true end-to-end experience for detecting, investigating, responding to, and protecting against cyberthreats with a unified security operations platform. Now, there’s no need for 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
A unified security operations platform breaks down security silos and empowers 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
Streamline triage with a unified incident queue and investigate incidents without switching portals. Easily hunt for cyberthreats across all entities with customizable playbooks or ask Microsoft Security Copilot to help translate natural language into Kusto Query Language. 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 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 with a cloud-based SIEM enriched by AI.
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.
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 2021.1
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 SIEM And XDR
See how Microsoft SIEM and XDR reduced the risk of breach by 60% and cyberthreat response time by 88%.3
The Total Economic Impact™ Of Microsoft Defender XDR (formerly Microsoft 365 Defender)
Learn how the study found a 242% ROI over three years and how SecOps efficiency added USD$6 million to the bottom line.4
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 Corporate Vice President, Rob Lefferts, for a deeper look at Microsoft Defender.
CISO Insider: Issue 3
Learn how Chief Information Security Officers are closing security gaps with a cloud-centric model.
Get concise, actionable, and relevant analysis of current and past cybersecurity threats.
-  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.
-  The Total Economic Impact™ Of Microsoft SIEM And XDR, a commissioned study conducted by Forrester Consulting, August 2022.
-  The Total Economic Impact™ Of Microsoft 365 Defender, a commissioned study conducted by Forrester Consulting, April 2022.