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Introduction:
The convergence of artificial intelligence and cloud identity has introduced a new frontier for cyber threats, where traditional identity controls often fall short. At RSAC 2026, Microsoft unveiled a series of Entra innovations designed to bridge this gap, focusing on securing non-human entities like AI agents, defending against AI-specific threats such as prompt injection, and providing robust resilience for multi-tenant environments. These updates represent a fundamental shift from managing only human identities to orchestrating security across the entire identity ecosystem.
Learning Objectives:
- Understand how to implement identity governance for AI agents using Microsoft Entra Agent ID.
- Learn techniques for discovering shadow AI usage and mitigating prompt injection attacks.
- Master the configuration of tenant governance, backup/recovery, and advanced Conditional Access policies.
You Should Know:
- Securing Non-Human Identities: Implementing Microsoft Entra Agent ID
This innovation extends identity protection to AI agents, treating them with the same rigor as users and devices. It allows security teams to apply Conditional Access policies, manage lifecycle through identity governance, and enforce least-privilege access for automated processes. The core idea is to prevent a compromised AI agent from becoming a pivot point for lateral movement.
Step‑by‑step guide to enable and enforce Agent ID protections:
1. Enable Agent Identity: In the Microsoft Entra admin center, navigate to Identity > Applications > Agent identities. Register your AI agent as a new application or service principal.
2. Assign Governance Policies: Go to Identity Governance > Access Reviews. Create a recurring access review for the agent’s service principal to ensure its permissions remain minimal and justified.
3. Configure Conditional Access: Navigate to Protection > Conditional Access. Create a new policy targeting the specific agent (or all agents) under “Cloud apps or actions” > “Select service principals.”
– Set grant controls to “Require compliant device” or “Require authentication strength” to ensure only authorized execution contexts can use the agent.
4. Automate Remediation: Use Microsoft Graph PowerShell to set up automatic remediation. For instance, if a risk is detected, you can disable the agent’s sign-in capability.
PowerShell to revoke sessions for a high-risk agent Connect-MgGraph -Scopes 'Application.ReadWrite.All', 'Policy.ReadWrite.ConditionalAccess' Revoke-MgUserAllRefreshToken -UserId <Agent-ServicePrincipal-Id>
- Defending the AI Era: Shadow AI Discovery and Prompt Injection Protection
With employees leveraging unapproved AI tools, organizations face data leakage risks. Microsoft Entra now introduces capabilities to discover “shadow AI” applications and protect against prompt injection, where malicious inputs manipulate AI outputs.
Step‑by‑step guide to deploy Shadow AI and prompt injection defenses:
1. Enable Cloud App Security Integration: Ensure Microsoft Defender for Cloud Apps (MDCA) is integrated with Entra. In Entra, go to Cloud Apps > Cloud Discovery.
2. Discover Shadow AI: Review the “Discovered apps” dashboard. Filter by category “AI Tools” or “Generative AI” to identify unsanctioned usage. Use MDCA to sanction or block risky AI apps via session controls.
3. Configure Authentication Contexts: In Entra, create an Authentication Context labeled “High-Risk AI Access.” This allows you to require step-up authentication when users access sensitive AI interfaces.
4. Implement Prompt Injection Mitigation: While Entra manages access, combine it with Defender for Cloud Apps’ content inspection. Create a file policy to detect and block attempts to upload prompts containing sensitive data (e.g., regex for credit card numbers) to unmanaged AI platforms.
– Policy Configuration: In MDCA, create a new policy > “Activity policy.” Set conditions: “Activity” = “Run prompt,” “Target” = “AI apps,” “Content” contains “password” or “confidential.” Set action to “Block.”
- Strengthening the Identity Foundation: Tenant Governance and Backup/Recovery
Managing multi-tenant environments introduces complexity; a misconfiguration in one tenant can cascade. Entra’s new Tenant governance features allow centralized policy application across tenants, while Backup and Recovery ensures critical identity objects like users, groups, and Conditional Access policies can be restored after accidental deletion or ransomware.
Step‑by‑step guide to configure Tenant governance and restore identity objects:
1. Cross-Tenant Policies: In Entra, go to External Identities > Cross-tenant access settings. Define default settings for all external tenants to enforce MFA and block certain apps. Use the “Tenant governance” blade (under Preview features) to apply these templates across tenants you manage.
2. Enable Backup and Recovery: Navigate to Identity > Backup and Recovery. This feature is typically managed via the Entra admin center or through Graph API. Click “Enable backup” and select a storage container (Azure Storage) for encrypted backups.
3. Perform a Restore:
- Using GUI: Go to Backup and Recovery > Restore. Select a point-in-time snapshot and choose objects to restore (e.g., a deleted Conditional Access policy).
- Using Azure CLI: For automation, use the following CLI command to restore a critical object:
az rest --method post --url "https://graph.microsoft.com/v1.0/directory/backupRestore/directoryObjects/{object-id}/restore" --body '{"backupDateTime": "2026-03-26T00:00:00Z"}'
- Verify Restoration: After restoration, run a policy compliance report to ensure the restored objects align with current security baselines.
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Supercharging Identity Teams: Conditional Access with Context-Aware Recommendations
Conditional Access is evolving from a static policy engine to a proactive advisor. New agent capabilities include context-aware recommendations (suggesting policies based on user risk and device posture), phased rollout for policies, and automated least-privilege enforcement that dynamically adjusts access based on user behavior.
Step‑by‑step guide to implement advanced Conditional Access automation:
- Enable Recommendations: In Entra, go to Protection > Conditional Access > Recommendations. Review the suggested policies—these are generated by analyzing your tenant’s risk signals and usage patterns.
- Implement Phased Rollout: When creating a new policy, use the “Assignments” tab. Instead of including all users, use the “Phased rollout” feature. Select a pilot group (e.g., “CA_Pilot”). Set the policy to “Report-only” initially, then monitor the Insights and Reporting dashboard for impact.
- Automate Least-Privilege Enforcement: Use the “What If” tool to simulate access. For automated enforcement, leverage Logic Apps and Graph API to create a workflow that, upon detecting excessive privilege, automatically applies a restrictive policy.
– Workflow Example: A Logic App triggers when Microsoft Sentinel detects a high number of “Sign-in failures” from a user with admin roles. The app then uses Graph API to add that user to a “Restricted Access” group, which is excluded in all but basic access policies.
4. Extend with Microsoft Security Store: In Entra, navigate to Security Store to discover and integrate third-party identity providers (e.g., for MFA) or external risk signals into your Conditional Access policies.
What Undercode Say:
- Key Takeaway 1: The concept of identity is expanding to include AI agents. Security teams must treat service principals and automated identities as first-class citizens with lifecycle management, just like human users.
- Key Takeaway 2: Defending against AI threats like prompt injection requires a shift from perimeter-based to content-based controls, leveraging cloud access security brokers (CASB) alongside identity management.
- Key Takeaway 3: Resilience is now a core identity requirement. The ability to backup and restore identity objects is critical for recovery from ransomware that targets administrative accounts.
- Key Takeaway 4: Automation in Conditional Access reduces the time between threat detection and remediation, enabling identity teams to scale security operations without adding headcount.
The RSAC 2026 announcements highlight a strategic pivot: identity is no longer just the gateway for users but the control plane for an organization’s entire digital ecosystem, including its AI workforce. As organizations rapidly adopt AI, the integration of governance, resilience, and adaptive policy will be the deciding factor between achieving productivity gains or suffering a catastrophic breach. The tools provided in Entra signal a future where identity security is proactive, resilient, and inherently tied to operational outcomes.
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Reported By: Markolauren Microsoft – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
