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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Improving email security outcomes with real-world Microsoft Defender insights
The latest email security benchmarking reports show strong Microsoft Defender performance across pre-delivery and post-delivery scenarios and reveal where threats and defenses continue to evolve. -
Threat matrix: Mapping threats across cloud web applications
Microsoft introduces the Cloud Web Applications Threat Matrix, a MITRE ATT&CK-aligned framework that helps defenders understand, prioritize, and mitigate threats to cloud-hosted web apps and serverless platforms. -
Impersonating IT support: how threat actors turn a remote session into enterprise-wide access
Microsoft Threat Intelligence observed a human-operated intrusion campaign that abuses Microsoft Teams external collaboration to impersonate IT support, gain remote access, and deploy a Node. -
Counterfeit installers to system compromise: Tracking a deceptive software download campaign
An active campaign is impersonating legitimate software vendors to deliver malware through look-alike download pages and regenerated installer archives. -
TerminalFix campaign deploys a reverse tunnel through multistage intrusion
Microsoft Threat Intelligence provides analysis of a ClickFix campaign that uses fake CAPTCHA prompts, DLL sideloading, and a reverse tunnel, with detections and hunting guidance. -
Microsoft named a Leader in the Frost Radar™: Cloud Workload Protection Platforms, 2026
Microsoft is named a visionary leader in the 2026 Frost Radar for Cloud Workload Protection Platforms, recognized for unified runtime security with Microsoft Defender for Cloud.