Microsoft Defender

Microsoft Defender helps prevent, detect, and respond to attacks across devices, identities, apps, email, data, workloads, and clouds. Explore threat intelligence, capabilities, and real-world guidance to help you get more out of Defender.

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Modernize your Security Operations Center with Microsoft Sentinel
Microsoft Sentinel is a cloud-native SIEM solution powered by AI and automation that delivers intelligent security analytics across your entire enterprise.
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July 16

5 min read

Microsoft is named a Leader in the 2025 Gartner® Magic Quadrant™ for Endpoint Protection Platforms

We are honored to be recognized once again as a Leader in the 2025 Gartner® Magic Quadrant™ for Endpoint Protection Platforms—our sixth consecutive time.
July 16

7 min read

Protecting customers from Octo Tempest attacks across multiple industries

To help protect and inform customers, Microsoft highlights protection coverage across the Microsoft Defender security ecosystem to protect against threat actors like Octo Tempest.
July 10

4 min read

Forrester names Microsoft a Leader in the 2025 Zero Trust Platforms Wave™ report

Employing a Zero Trust strategy is an effective way to modernize security infrastructure to protect against ever evolving security challenges.
July 7

4 min read

Learn how to build an AI-powered, unified SOC in new Microsoft e-book

Read Coordinated Defense: Building an AI-powered, unified SOC, the new e-book on how organizations can unify security operations to better meet the challenges of today’s cyberthreat landscape.
Tailored AI insights from Microsoft Security Copilot
Empower your defenders to detect hidden patterns, harden defenses, and respond to incidents faster with generative AI.
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July 1

4 min read

Planning your move to Microsoft Defender portal for all Microsoft Sentinel customers

Microsoft is transitioning Microsoft Sentinel into the Microsoft Defender portal to create a unified security operations experience.
June 30

18 min read

Jasper Sleet: North Korean remote IT workers’ evolving tactics to infiltrate organizations

Since 2024, Microsoft Threat Intelligence has observed remote IT workers deployed by North Korea leveraging AI to improve the scale and sophistication of their operations, steal data, and generate revenue for the North Korean government.
June 24

5 min read

Microsoft is named a Leader in The Forrester Wave™: Security Analytics Platforms, 2025

Microsoft is proud to be named a Leader in The Forrester Wave™: Security Analytics Platforms, Q2 2025—which we believe reflects our deep investment in innovation and commitment to support SOC’s critical mission.
June 3

4 min read

How Microsoft Defender for Endpoint is redefining endpoint security

Learn why many CISOs prefer Microsoft Defender for Endpoint for comprehensive cyberthreat protection across devices and platforms.
Go beyond data protection with Microsoft Purview
Govern, protect, and manage all of your data with Microsoft Purview, comprehensive solutions to help give you better visibility and control.
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June 2

5 min read

Discover how automatic attack disruption protects critical assets while ensuring business continuity

To help security teams protect critical assets while ensuring business continuity, Microsoft Defender developed automatic attack disruption: a built-in self-defense capability.
May 29

12 min read

Defending against evolving identity attack techniques

Threat actors continue to develop and leverage various techniques that aim to compromise cloud identities.
May 27

16 min read

New Russia-affiliated actor Void Blizzard targets critical sectors for espionage

Microsoft Threat Intelligence has discovered a cluster of worldwide cloud abuse activity conducted by a threat actor we track as Void Blizzard, who we assess with high confidence is Russia-affiliated and has been active since at least April 2024.
May 21

15 min read

Lumma Stealer: Breaking down the delivery techniques and capabilities of a prolific infostealer

Over the past year, Microsoft Threat Intelligence observed the persistent growth and operational sophistication of Lumma Stealer, an info-stealing malware used by multiple financially motivated threat actors to target various industries.