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Stop prompt injection from hijacking your agent, new security capabilities now released within Agent Framework

Prompt injection is the #1 risk on the OWASP LLM Top 10, and most agents in production today defend against it with one of two heuristics: a defensive system prompt, or a hand-rolled allowlist. Neither is deterministic. Both fail silently the day someone slips a [SYSTEM OVERRIDE] line...
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Announcing Agent Governance Toolkit MCP Extensions for .NET

Announcing a Public Preview .NET package that adds policy enforcement, startup tool scanning, fallback governance, and response sanitization to MCP servers with a single builder extension.
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Latest posts

Feb 11, 2026
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How we built the Microsoft Learn MCP Server

Tianqi,
Eric,
Pieter
When we launched the Microsoft Learn Model Context Protocol (MCP) Server in June 2025, our goal was simple: make it effortless for AI agents to use trusted, up-to-date Microsoft Learn documentation. GitHub Copilot and other agents are increasingly common, and they need to be able to...
Engineering@Microsoft
Feb 11, 2026
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Announcing TypeScript 6.0 Beta

Daniel Rosenwasser
Today we are announcing the beta release of TypeScript 6.0! To get started using the beta, you can get it through npm with the following command: npm install -D typescript@beta TypeScript 6.0 is a unique release in that we intend for it to be the last release based on the current...
TypeScript
Feb 11, 2026
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GitHub Copilot Testing for .NET Brings AI-powered Unit Tests to Visual Studio 2026

McKenna Barlow
GitHub Copilot testing for .NET is now available in Visual Studio 18.3, offering AI-powered tools to quickly create, build, and run unit tests. With flexible prompts and full IDE integration, it supports testing from single methods to entire solutions, helping reduce repetitive tasks and speed up feedback. Try it and share your feedback to shape its future.
.NET Blog
Feb 11, 2026
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Beyond the Prompt - Why and How to Fine-tune Your Own Models

Radhika Bollineni
Large Language Models (LLMs) have reached a point where general intelligence is no longer the bottleneck. The real challenge in enterprise AI systems behavioral alignment ensuring models that produce consistent, reliable, policy-compliant outputs on a scale. Prompt engineering and...
Microsoft Foundry Blog
Feb 11, 2026
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Unlock language-specific rich symbol context using new find_symbol tool

Sinem,
Hannah
Refactoring at scale is a time-consuming and error-prone process for developers. In large codebases, developers have relied on manual searches and incremental edits across multiple files to accomplish these tasks. Modern development workflows depend on fast and accurate code navigation...
Visual Studio Blog
Feb 11, 2026
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How do I suppress the hover effects when I put a Win32 common controls ListView in single-click mode?

Raymond Chen
You can prevent the item from becoming hot-tracked.
The Old New Thing
Feb 11, 2026
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Deploy to Azure App Service deployment slots with azd

PuiChee (PC) Chan
azd now supports direct deployments to Azure App Service slots—quick, clear, and slot-aware for the first time.
Azure SDK Blog
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