Microsoft’s AI Prompt Defense Stack: What Actually Works

This article provides an in-depth technical analysis of Microsoft's multi-layered AI Prompt Defense Stack, covering components like Prompt Shields, Spotlighting, Entra Global Secure Access, Defender for Cloud AI Threat Protection, and the PyRIT red teaming framework. It explains how these tools work together to defend against prompt injection attacks in LLMs, discusses their limitations, and offers practical guidance for architects and security professionals evaluating these controls. The article is highly relevant to IT/technology, focusing on AI security, cloud defense, and software engineering best practices.