How to secure edge AI in customer-owned environments
As AI moves into customer-owned environments, organizations need new ways to verify the systems, software, and AI assets they trust before releasing sensitive data, credentials, and models.
Actionable threat insights
Get timely insights into emerging vulnerabilities, first‑finder discoveries, and evolving cyberattacker behaviors. Explore deep research and real‑world Microsoft Defender scenarios that show how proactive detection and quick action help organizations prevent compromise.
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ASCII smuggling crosses over from AI prompt injection to phishing evasion
Invisible Unicode characters popularized for hiding instructions from AI models are now being used to obfuscate words before email filters parse them. -
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. Retain Microsoft Defender Experts
Microsoft Defender Experts are available to strengthen your teams with expertise when and where you need it. Learn how to elevate your security with expert-led services.
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Cybersecurity IR Workshop: The workshop you shouldn’t miss
Cyber resilience starts before a crisis. Gain practical insights from DART to strengthen readiness and response. -
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. -
When AI infrastructure becomes the target: Securing gateways and control points
Microsoft Threat Intelligence examines attacks on exposed AI workloads, including LiteLLM gateway exploitation, credential harvesting, persistence, and cryptomining activity. -
Hunting MacSync Stealer infrastructure through behavioral pivots
MacSync Stealer rapidly rotates domains to evade detection, but its behavior remains consistent. 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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From open lures to cloaked gates: How a macOS ClickFix campaign learned to hide
A macOS ClickFix campaign shifted tactics from openly serving infostealer lures to hiding them behind a browser-fingerprinting gate. -
ChainDrop supply chain compromise: Anatomy of a self-propagating worm
A credential-stealing worm hidden in more than 400 compromised npm packages automatically spread across software ecosystems by republishing malicious updates. -
128 Seconds to disruption: Microsoft Defender stops ransomware at QNET
Microsoft Defender automatically isolated a compromised QNET endpoint in 128 seconds, stopping a multi-stage attack before the payload could persist or spread. -
Enhancing AI security through global AI red teaming
Microsoft’s External Red Team Alliance (EXTRA) is a global AI security initiative designed to advance AI safety research and red teaming.
