Microsoft 365 Copilot Vulnerability Exposes Sensitive Data Through One-Click Attack

Microsoft 365 Copilot has been found vulnerable to a critical one-click data exfiltration attack chain dubbed “SearchLeak,” exposing sensitive enterprise data through a combination of AI-specific and traditional web vulnerabilities. Discovered by Varonis Threat Labs, the flaw, tracked as CVE-2026-42824 and rated critical, demonstrates how modern AI integrations can unintentionally expand attack surfaces by linking […]

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