GigaWiper: Anatomy of a destructive backdoor assembled from multiple malware
GigaWiper is a destructive backdoor that combines multiple wiping and ransomware-like capabilities into a single operational platform.
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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5 insights from Frost & Sullivan’s 2025 Frost Radar™ for Cloud Security Posture Management
Read five key learnings from the Frost & Sullivan 2025 Frost Radar™ for CSPM to learn how CSPM is evolving from point-in-time compliance to continuous risk management. -
Microsoft named a leader in the Frost Radar for cloud and application runtime security
Frost & Sullivan names Microsoft a leader as cloud and application security converge into unified, runtime risk reduction. -
What’s new in Microsoft Security: June 2026
This month’s updates help security and IT teams strengthen identity and multicloud foundations, protect data wherever it lives, and secure the developer workflows powering AI innovation. 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.
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Securing AI agents: When AI tools move from reading to acting
MCP tool poisoning turns trusted AI agents into a control plane for data loss. -
Chromium extension uses AI‑related branding to redirect browser search
A malicious Chromium-based extension that spoofs the AI-powered answer engine Perplexity AI redirects browser search traffic using MV3 APIs and intermediary infrastructure. -
Photo ZIP campaign targeting hospitality industry delivers Node.js implant for persistent access
Microsoft Threat Intelligence identified an active multi-stage intrusion campaign targeting hospitality organizations in Europe and Asia. -
Microsoft a Leader in The Forrester Wave™ for Endpoint Management Platforms
Microsoft named a Leader in the Forrester Wave™: Endpoint Management Platforms, Q2 2026, with the highest scores in the current offering and strategy categories. 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.
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CNAPP evolution: How Microsoft aligns with leading cloud risk management platforms
Learn how CNAPP platforms are helping organizations prioritize exploitable risks, reduce exposure, and operationalize security across the application lifecycle. -
StealC and Amadey: Breaking down infostealers and the cybercrime services that deliver them
On June 24, 2026, Microsoft’s Digital Crimes Unit (DCU) facilitated the takedown, suspension, and blocking of domains that formed the backbone of the StealC and Amadey infrastructure. -
AutoJack: How a single page can RCE the host running your AI agent
AutoJack is a novel exploit chain showing how a single malicious webpage can turn an AI browsing agent into a remote code execution vector on the host machine. -
From package to postinstall payload: Inside the Mastra npm supply chain compromise by Sapphire Sleet
A poisoned npm package infected 140+ projects with a hidden payload.
