Microsoft 365 Copilot – Arbitrary Data Exfiltration via Mermaid Diagrams

Hacker NewsSunday, October 26, 2025 at 10:58:31 PM
NegativeTechnology
Recent reports have raised concerns about Microsoft 365 Copilot's potential for arbitrary data exfiltration through Mermaid diagrams. This issue is significant as it highlights vulnerabilities in widely used software, potentially exposing sensitive information to unauthorized access. As businesses increasingly rely on digital tools, ensuring data security is paramount, making this revelation particularly alarming for users and organizations alike.
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