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site iconDen DelimarskyModify

I am an engineer and product manager, currently working at Microsoft in the security organization helping the team ship secure and performant authentication and authorization libraries.
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Rss preview of Blog of Den Delimarsky

Visual Studio Code Now Supports MCP Authorization

2025-05-26 08:00:00

See how the latest Visual Studio Code Insiders builds seamlessly integrate with both new and legacy MCP authorization specs, offering a frictionless developer experience for accessing protected MCP servers with any OAuth provider.

Preventing Confused Deputy Attacks In MCP With Azure API Management

2025-05-25 08:00:00

Learn how to protect Model Context Protocol (MCP) servers from confused deputy attacks when implementing Dynamic Client Registration, and how Azure API Management can help mitigate these security risks.

The New MCP Authorization Specification

2025-04-26 08:00:00

A super-quick overview of the new MCP authorization specification and how it improves security and flexibility for MCP servers.

Better Logic For Showing Auth Windows With Your Local MCP Server

2025-04-21 08:00:00

Fix that annoying issue where authentication windows appear behind your MCP client by implementing smarter window handle discovery. This walkthrough shows you how to properly parent WAM dialogs to VS Code, Claude Desktop, and other MCP clients.

Secure Remote MCP Servers With Entra ID And Azure API Management

2025-04-20 08:00:00

Implement secure, enterprise-ready Model Context Protocol (MCP) servers protected by Entra ID authentication using Azure API Management and Azure Functions. This complete guide walks you through creating a confidential client architecture that protects sensitive tokens while enabling secure LLM tool access.

Enable Local MCP Servers To Access Entra ID Accounts

2025-04-14 08:00:00

Learn how to authenticate local Model Context Protocol servers with Entra ID using Windows Web Account Manager (WAM). This practical guide shows how to implement interactive user authentication in local MCP servers without complex OAuth flows.