Original sourceVaronis
Summary
Varonis Threat Labs disclosed a security vulnerability in Microsoft Copilot Personal, codenamed CoSnitch (CVE-2026-24301), a one-click data exfiltration vulnerability. An attacker can trigger the attack chain via a seemingly legitimate link without user interaction. The exploit involves auto-execut…
Key points
- Enterprise users should assess Copilot integrations, review OAuth scopes, and monitor for anomalous prompts.
- CoSnitch demonstrates AI assistants can be data exfiltration vectors, highlighting the importance of security monitoring.
- Enterprise Copilot users should apply patches immediately and review connected permissions to prevent data leaks.
- This is the third Copilot vulnerability Varonis found in 2026, showing security challenges in AI tools.
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