Defending against advanced tactics

Learn how Microsoft Defender counters the latest cyberattacker techniques—from automated and AI‑powered threats to supply chain and identity‑based attacks. See how customers are using advanced defenses to reduce exposure across their environments.

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Defending against advanced tactics

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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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February 5

9 min read

New Clickfix variant ‘CrashFix’ deploying Python Remote Access Trojan

CrashFix crashes browsers to coerce users into executing commands that deploy a Python RAT, abusing finger.
February 2

14 min read

Infostealers without borders: macOS, Python stealers, and platform abuse

How modern infostealers target macOS systems, leverage Python‑based stealers, and abuse trusted platforms and utilities to distribute credential‑stealing payloads.
January 23

8 min read

From runtime risk to real‑time defense: Securing AI agents

Why securing AI agents at runtime is essential as attackers find new ways to exploit generative orchestration.
January 21

7 min read

Resurgence of a multi‑stage AiTM phishing and BEC campaign abusing SharePoint

Microsoft Defender Researchers uncovered a multi‑stage AiTM phishing and business email compromise (BEC) campaign targeting multiple organizations in the energy sector.