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1 | | -# Deploy Microsoft Sentinel workspace for AI threat detection |
| 1 | +# AI related data connectors enabled on Microsoft Sentinel/SIEM workspace |
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3 | | -**Implementation Effort:** Medium – Requires provisioning a Log Analytics workspace, onboarding Microsoft Sentinel, configuring data connectors for AI workload telemetry, and setting retention policies appropriate for security investigation timelines. |
4 | | -**User Impact:** Low – Infrastructure deployment; end users are not affected. |
| 3 | +**Implementation Effort:** Medium – Requires enabling and configuring multiple data connectors in an existing Microsoft Sentinel workspace, validating that AI-relevant log tables are ingesting correctly, and confirming alert flow end-to-end from each source into Sentinel incidents. |
| 4 | +**User Impact:** Low – Infrastructure configuration; end users are not affected. |
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6 | 6 | ## Overview |
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8 | | -AI workloads generate security-relevant telemetry — Azure OpenAI diagnostic logs, agent identity sign-in events, Copilot interaction records — but without a centralized SIEM platform, this data sits in isolated logs with no correlation, no detection logic, and no incident management workflow. Deploying a Microsoft Sentinel workspace is the foundational step that makes everything else in the AI threat detection and response lifecycle possible: analytics rules, playbooks, automation rules, workbooks, and Defender XDR integration all depend on this workspace existing. |
| 8 | +A Microsoft Sentinel workspace without the right data connectors provides no visibility into AI threats. The connectors determine which telemetry is available for analytics rules, workbooks, hunting queries, and incident investigation — and for AI security, those sources span identity, cloud posture, data governance, and AI-native signals. Enabling the correct set of AI-related connectors is the prerequisite for every downstream detection and response capability in this pillar. |
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10 | | -The workspace must be scoped and configured with AI threat detection in mind. This means connecting the right data sources — Azure OpenAI diagnostics, Entra ID sign-in and audit logs for agent identities, Defender for Cloud alerts for AI services, and Microsoft 365 activity logs for Copilot interactions — and setting retention periods long enough to support investigation of slow-moving AI threats like gradual model manipulation or sustained prompt injection campaigns. |
| 10 | ++ The **Microsoft Defender XDR** connector is the highest-priority integration. It streams correlated incidents and raw alerts from across the Defender portfolio — endpoint, identity, cloud apps, and AI services — into Sentinel as unified incidents. This is what enables cross-domain attack chain visibility: a phishing campaign leading to identity compromise, followed by agent abuse, surfaces as a single correlated incident rather than isolated alerts across separate consoles. |
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12 | | -This supports *Assume breach* by establishing the detection and investigation platform that enables the organization to identify, correlate, and respond to AI-specific security events. It supports *Verify explicitly* by centralizing the identity and activity telemetry needed to validate whether AI workload behavior is legitimate. Without this workspace, the organization has no ability to detect, investigate, or respond to threats targeting its AI workloads — alerts go uncreated, incidents go unmanaged, and threat actors operate unobserved. |
| 12 | ++ The **Microsoft Entra ID** and **Microsoft Entra ID Protection** connectors provide identity telemetry for agent workload identities. Sign-in logs, audit logs, and risk detections for service principals, managed identities, and app registrations are essential for detecting anomalous authentication patterns — unexpected token issuances, unauthorized changes to agent app permissions, or risk events on identities that should exhibit consistent, predictable behavior. Without these connectors, identity-based threats to agent infrastructure generate no signal in Sentinel. |
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| 14 | ++ **Defender for AI Services alerts via Microsoft Defender for Cloud (MDC)** delivers platform-level AI threat signals: prompt injection detections, jailbreak attempts, credential harvesting patterns, and data exfiltration indicators from Azure OpenAI and Azure AI Foundry endpoints. This connector is the primary source of AI-native security alerts and must be validated to confirm alerts flow from Defender for Cloud into Sentinel before analytics rules that depend on `SecurityAlert` are authored. |
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| 16 | ++ The **Microsoft Purview Information Protection** connector surfaces data sensitivity events — DLP policy violations and high-sensitivity label activity triggered by AI-generated content — enabling detection of data oversharing through Copilot and agent interfaces. These events are frequently the earliest observable signal of an AI workload accessing or emitting data beyond its intended scope. |
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| 18 | ++ The **Microsoft 365 Copilot** connector (via Microsoft Purview Audit) ingests Copilot interaction logs: user prompts, Copilot responses, plugin and connector activity, and grounding data access events. This data is required for investigating Copilot-specific incidents such as prompt injection through document grounding or unintended exposure of sensitive data in Copilot responses. |
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| 20 | ++ The **Agent 365** connector provides agent lifecycle and activity telemetry from the Agent 365 Registry, enabling detection of unauthorized agent deployments, access control modifications, and anomalous runtime behavior across the organization's agent population. Together, these seven connectors establish the complete telemetry surface needed to detect, investigate, and respond to threats across the full AI workload lifecycle — from identity compromise and network interception to data exfiltration and agent runtime abuse. |
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| 22 | +This supports *Assume breach* by ensuring that every layer of the AI stack — identity, platform, data, and application — contributes security telemetry to a centralized detection surface. It supports *Verify explicitly* by enabling continuous correlation of AI workload activity against known-bad patterns and organization-specific behavioral baselines. Without these connectors enabled and validated, analytics rules produce no results, investigations have no evidence, and threat actors targeting AI infrastructure operate without generating a single Sentinel alert. |
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14 | 24 | ## Reference |
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16 | | -* [Microsoft Sentinel overview](https://learn.microsoft.com/en-us/azure/sentinel/overview) |
17 | | -* [Prerequisites for deploying Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/prerequisites) |
18 | | -* [Onboard Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/quickstart-onboard) |
19 | | -* [Best practices for Microsoft Sentinel workspace architecture](https://learn.microsoft.com/en-us/azure/sentinel/best-practices-workspace-architecture) |
20 | | -* [Connect data sources to Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/connect-data-sources) |
21 | | -* [Microsoft Sentinel pricing](https://learn.microsoft.com/en-us/azure/sentinel/billing) |
| 26 | +* [Connect Microsoft Defender XDR data to Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/connect-microsoft-365-defender) |
| 27 | +* [Connect Microsoft Entra ID data to Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/connect-azure-active-directory) |
| 28 | +* [Microsoft Entra ID Protection connector for Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/data-connectors/microsoft-entra-id-protection) |
| 29 | +* [Integrate Microsoft Defender for Cloud alerts with Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/connect-defender-for-cloud) |
| 30 | +* [Overview of AI threat protection in Microsoft Defender for Cloud](https://learn.microsoft.com/en-us/azure/defender-for-cloud/ai-threat-protection) |
| 31 | +* [Microsoft Purview Information Protection connector for Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/data-connectors/microsoft-purview-information-protection) |
| 32 | +* [Connect Microsoft 365 Copilot data to Microsoft Sentinel](https://learn.microsoft.com/en-us/azure/sentinel/data-connectors/microsoft-copilot-for-microsoft-365) |
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