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.

Refine Results

Filtered by

Clear All

Microsoft Defender
Oldest to Newest

Refine results

Sort By

Content Type

Topic

Products and services

Publish date

Start Date

End Date

Prevent threats with Microsoft Defender
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.
Explore products
November 22, 2023

7 min read

Diamond Sleet supply chain compromise distributes a modified CyberLink installer

Microsoft has uncovered a supply chain attack by the threat actor Diamond Sleet (ZINC) involving a malicious variant of an application developed by CyberLink Corp.
November 28, 2023

5 min read

Forrester names Microsoft Intune a Leader in the 2023 Forrester Wave™ for Unified Endpoint Management

The Forrester Wave™: Unified Endpoint Management, Q4 2023 report recognizes Intune as a leader.
December 7, 2023

28 min read

Star Blizzard increases sophistication and evasion in ongoing attacks

Microsoft Threat Intelligence continues to track and disrupt malicious activity attributed to a Russian state-sponsored actor we track as Star Blizzard, who has continuously improved their detection evasion capabilities while remaining focused on email credential theft against targets.
December 12, 2023

16 min read

Threat actors misuse OAuth applications to automate financially driven attacks

Microsoft Threat Intelligence presents cases of threat actors misusing OAuth applications as automation tools in financially motivated attacks.
Retain Microsoft Security Experts
Microsoft Security Experts are now available to strengthen your team with managed security services. Learn how to defend against threats with security experts.
Get started
December 15, 2023

18 min read

Patching Perforce perforations: Critical RCE vulnerability discovered in Perforce Helix Core Server

Four new unauthenticated remotely exploitable security vulnerabilities discovered in the popular source code management platform Perforce Helix Core Server have been remediated after being responsibly disclosed by Microsoft.
December 28, 2023

10 min read

Financially motivated threat actors misusing App Installer

Since mid-November 2023, Microsoft Threat Intelligence has observed threat actors, including financially motivated actors like Storm-0569, Storm-1113, Sangria Tempest, and Storm-1674, utilizing the ms-appinstaller URI scheme (App Installer) to distribute malware.
January 12, 2024

5 min read

Microsoft is named a Leader in the 2023 Gartner® Magic Quadrant™ for Endpoint Protection Platforms

Gartner has named Microsoft a Leader in the 2023 Gartner® Magic Quadrant™ for Endpoint Protection Platforms.
January 16, 2024

5 min read

Unified security operations with Microsoft Sentinel and Microsoft Defender XDR

A unified security operations center (SOC) platform that combines all the benefits of multiple security tools offers several advantages.
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.
Learn more
January 17, 2024

8 min read

New TTPs observed in Mint Sandstorm campaign targeting high-profile individuals at universities and research orgs

Since November 2023, Microsoft has observed a distinct subset of Mint Sandstorm (PHOSPHORUS) targeting high-profile individuals working on Middle Eastern affairs at universities and research organizations in Belgium, France, Gaza, Israel, the United Kingdom, and the United States.
January 25, 2024

10 min read

Midnight Blizzard: Guidance for responders on nation-state attack

The Microsoft security team detected a nation-state attack on our corporate systems on January 12, 2024, and immediately activated our response process to investigate, disrupt malicious activity, mitigate the attack, and deny the threat actor further access.
February 21, 2024

5 min read

Get the most out of Microsoft Copilot for Security with good prompt engineering

Good prompt engineering can greatly improve generative AI outputs, which means more relevant and accurate results.
February 26, 2024

5 min read

Microsoft Copilot for Security: The great equalizer for government security

Microsoft Copilot for Security is the first generative AI security product that will help defend organizations at machine speed and scale.