Azure OpenAI security: Entra ID beats API keys for auditability

This article details how to investigate security incidents involving Azure OpenAI by using Microsoft Entra ID for authentication instead of API keys. While API keys are quick to revoke, they offer poor auditability, making it difficult to determine which specific identity made a call. By contrast, Entra ID allows for traceable access, enabling security teams to identify the exact user, service principal, or managed identity and their assigned roles responsible for a data-plane request. The author outlines the prerequisites for enabling Entra ID authentication, including a custom subdomain for the Azure OpenAI resource and assigning appropriate roles like Cognitive Services OpenAI User or Contributor to the calling identity. AI

IMPACT Enhances security and auditability for AI model usage in enterprise environments.

RANK_REASON The article provides a technical guide on using a specific feature (Entra ID) within a product (Azure OpenAI) to solve a problem (auditability).

Read on dev.to — LLM tag →

• API keys
• Azure
• Azure OpenAI
• Cognitive Services OpenAI Contributor
• Cognitive Services OpenAI User
• DefaultAzureCredential
• Microsoft Entra ID
• service principal

• product
• infra

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