In the agentic era, security must be ambient and autonomous, like the AI it protects. This is our vision for security, where security becomes the core primitive.

Read about Microsoft and NVIDIA joint research on real-time immunity.

Expanded ITDR features—including the new Microsoft Defender for Identity sensor, now generally available—bring improved protection, correlation, and context to help customers modernize their identity defense.

The Microsoft Security Store is the gateway for customers to easily discover, buy, and deploy trusted security solutions and AI agents from leading partners.

As customer support tools become more connected and data-rich, they’re increasingly targeted by cyberattacks.

At Microsoft, building a lasting security culture is more than a strategic priority—it is a call to action.

Microsoft Secure Future Initiative (SFI) patterns and practices are practical, actionable, insights from practitioners for practitioners based on Microsoft’s implementation of Zero Trust through the Microsoft Secure Future Initiatives.

Microsoft Sentinel is expanding into an agentic platform with general availability of the Sentinel data lake, and the public preview of Sentinel graph and Sentinel Model Context Protocol (MCP) server.

​The latest 2025 commissioned Forrester Consulting Total Economic Impact™ (TEI) study reveals a 242% ROI over three years for organizations that chose Microsoft Defender.

We’re evolving our industry-leading Security Incidents and Event Management solution (SIEM), Microsoft Sentinel, to include a modern, cost-effective data lake.

To help protect and inform customers, Microsoft highlights protection coverage across the Microsoft Defender security ecosystem to protect against threat actors like Octo Tempest.

Read Coordinated Defense: Building an AI-powered, unified SOC, the new e-book on how organizations can unify security operations to better meet the challenges of today’s cyberthreat landscape.