Microsoft Copilot Security Assessment
White Knight Labs assesses your Microsoft 365 Copilot deployment for risks such as prompt injection, excessive data access, and unintended AI actions, with remediation recommendations aligned to Microsoft’s Secure Copilot guidance.
Securing Your Microsoft 365 Copilot Deployment
Microsoft 365 Copilot is deeply integrated into the data your organization already trusts — email, documents, chats, and files across SharePoint, OneDrive, and Teams. That integration is exactly what makes it powerful, and exactly what makes it risky if permissions, data boundaries, and AI-specific attack surfaces aren’t assessed deliberately. White Knight Labs evaluates your Copilot deployment for the ways it can be manipulated, misused, or turned into an unintended data access path.
Our assessment goes beyond a standard Microsoft 365 security review. We test the AI-specific behaviors unique to Copilot — how it responds to crafted prompts, how it handles permission boundaries when synthesizing answers across multiple data sources, and whether it can be coaxed into taking or suggesting actions outside its intended scope.
What We Assess
Prompt Injection Risk
We test whether Copilot can be manipulated through crafted inputs — including content embedded in documents or emails it processes — to behave in unintended ways or leak information.
Excessive Data Access
We evaluate whether Copilot’s responses respect underlying permission boundaries, or whether it can be used to surface data a user shouldn’t otherwise be able to access directly.
Unintended AI Actions
Where Copilot is connected to actions or plugins, we assess whether it can be induced to take actions beyond what a user explicitly authorized.
Data Leakage Across Boundaries
We test for scenarios where Copilot inadvertently surfaces sensitive information across organizational, departmental, or classification boundaries.
Configuration and Governance Review
We review your Copilot configuration, data classification, and access governance against Microsoft’s Secure Copilot guidance.
Our Approach
White Knight Labs combines traditional Microsoft 365 security assessment experience with dedicated AI/LLM security testing methodology. We evaluate both the underlying data governance that determines what Copilot can see, and the AI-specific behaviors that determine how it uses that access — since a Copilot deployment can be misconfigured at either layer.
Testing is conducted against your live or a representative Copilot environment, using realistic user scenarios and adversarial prompt techniques, with findings mapped directly to Microsoft’s own Secure Copilot guidance so your remediation work aligns with vendor-recommended controls.
Why You Need This Assessment
Copilot’s value comes from its access to your organization’s data — which is also precisely what makes a misconfigured deployment dangerous. Because Copilot synthesizes answers across data sources a user may not have directly opened, subtle permission or governance gaps can result in exposure that traditional access reviews wouldn’t catch.
This assessment is essential for any organization rolling out or scaling Microsoft 365 Copilot, particularly in regulated industries or environments with complex data sensitivity and permission structures.
Engagement Process
Environment and Governance Review
We review your Copilot configuration, data classification, and underlying Microsoft 365 permission structure.
Adversarial Prompt Testing
We test Copilot’s responses to crafted and adversarial prompts, including content-embedded injection attempts.
Data Boundary Testing
We attempt to surface data across permission and classification boundaries through Copilot-mediated queries.
Remediation Roadmap
Findings are mapped to Microsoft’s Secure Copilot guidance with prioritized recommendations for your environment.
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RISK REDUCTION
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BUSINESS INTEGRITY
We leverage our cybersecurity expertise to safeguard your business integrity, ensuring you operate securely, move forward confidently, and build trust in an interconnected digital world.
DATA PROTECTION
We deploy cutting-edge cybersecurity measures and personalized strategies to offer unwavering data protection, reinforcing our commitment to preserving your company’s invaluable digital assets.
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