What’s new in Microsoft Security: November 2026
Microsoft Security’s November 2026 updates strengthen AI agent security, least privilege, threat protection, and exposure management.
AI and agents
AI and machine learning help you identify threats sooner and respond more effectively. Learn how to safeguard your infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS) resources across multicloud and hybrid environments.
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Microsoft named a Leader in the 2026 Gartner® Magic Quadrant™ for AI Agent Management Platforms
Read why Gartner named Microsoft a Leader in the inaugural 2026 Magic Quadrant for AI Agent Management Platforms. -
Inside a malicious Claude Code-branded extension and its persistent SSH backdoor
Microsoft analyzes a malicious Claude Code–branded extension, its persistent SSH backdoor, and guidance to detect and remediate it. -
The CISO’s evolving role: Protecting and defending in the agentic era
As AI and agents reshape the enterprise, CISOs face two critical priorities: enabling innovation with the right identity and data guardrails, and modernizing defense to keep pace with AI-powered threats. 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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Inside the LiteLLM 1.107.0 supply chain compromise: Credential theft through Python startup hooks
Microsoft Threat Intelligence analyzes the LiteLLM 1. -
AI-driven, large-scale nation-state campaign using ARTEX enables supply chain compromise
Storm-0940 used ARTEX agentic AI to accelerate a ConnectWise supply chain compromise, enabling application credential abuse across Microsoft 365 environments. -
Agents are your newest insiders. Security must move at their speed.
New capabilities in Microsoft 365 E7 and Project Perception help organizations contain agent risk and adapt protection continuously. -
Managing open-weight model risk in enterprise deployments
New whitepaper from Microsoft and NVIDIA helps enterprises manage open-weight AI model risks with a shared taxonomy, evaluations, and controls. 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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3 lessons from frontier AI vulnerability research
Read how How Microsoft Security’s FORGE Lab is scaling vulnerability research from Windows to the Linux kernel. -
CISO perspectives on managing vulnerability risks in the age of AI
Learn how CISOs can mitigate cybersecurity risks and increase resilience in the age of AI-powered vulnerability management. -
Insights from the 2026 Microsoft Digital Defense Report
Read highlights from the 2026 Microsoft Digital Defense Report, which reflects a security environment that continues to grow more interconnected. -
Preparing governments for an era of interconnected cyber risk
According to this year’s Microsoft Digital Defense Report, government agencies and services were the sector most impacted by cyber threats in 2026, accounting for 27% of observed activity, up from 17% in 2025.
