# The Model is the Vulnerability: Securing Copilot with Entra ID and Zero Trust

Page: https://stenobird.com/podcast/m365-fm-modern-work-security-and-productivity-with-microsoft-365-7311214/the-model-is-the-vulnerability-securing-copilot-with-entra-id-and-zero-trust
Text version: https://stenobird.com/podcast/m365-fm-modern-work-security-and-productivity-with-microsoft-365-7311214/the-model-is-the-vulnerability-securing-copilot-with-entra-id-and-zero-trust.md
Podcast: [M365.FM - Modern work, security, and productivity with Microsoft 365](https://stenobird.com/podcast/m365-fm-modern-work-security-and-productivity-with-microsoft-365-7311214)
Published: 2026-05-31T04:00:02+00:00
Episode link: https://www.spreaker.com/episode/the-model-is-the-vulnerability-securing-copilot-with-entra-id-and-zero-trust--72223141
Audio file: https://dts.podtrac.com/redirect.mp3/api.spreaker.com/download/episode/72223141/the_model_is_the_vulnerability_securing_copilot_with_entra_id_and_zero_trust.mp3
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Duration seconds: 4370

## Resource

Microsoft Copilot is transforming how organizations access, analyze, and act on information. But while most security conversations focus on AI models, hallucinations, and prompt engineering, the real risk often lives somewhere else entirely. The model is not the vulnerability. The vulnerability is the identity layer, the permissions model, and the governance framework sitting underneath it.In this episode of the M365 FM Podcast, we explore why Microsoft Copilot doesn't create new security problems—it exposes the ones that already exist. From excessive SharePoint permissions and forgotten group memberships to semantic indexing and AI-powered data discovery, Copilot amplifies every weakness hiding inside your Microsoft 365 environment. If your permissions are broken, AI simply makes those problems easier to find. UNDERSTANDING THE LETHAL TRIFECTA One of the biggest risks in enterprise AI is what security researchers call the "Lethal Trifecta." When these three conditions exist together, organizations become highly vulnerable to AI-driven attacks: • Access to sensitive enterprise data • Exposure to untrusted content such as emails, Teams messages, and SharePoint comments • The ability for AI systems to communicate or take action on behalf of usersWhen these elements combine, prompt injection attacks can move from theoretical risk to real-world business impact. WHY PROMPT INJECTION CHANGES EVERYTHING Prompt injection is not a software bug. It is a consequence of how large language models process information. AI systems cannot reliably distinguish between instructions and data, creating opportunities for attackers to hide commands inside documents, emails, websites, and collaboration platforms.We examine real-world examples including ShareLeak and other Microsoft Copilot vu…

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