Microsoft Copilot AI Bug Exposes Confidential Emails by Bypassing Security Controls
Date: 2026-02-18
Attack vector: data-exfiltration
Category: real-world
Severity: High

Tracked by the OECD AI Incidents and Hazards Monitor (AIM) as OECD-AIM-2026-02-18-fac4, dated 2026-02-18. Classified attack vector: data-exfiltration. See the AIM incident page (https://oecd.ai/en/incidents/2026-02-18-fac4) and its cited news sources for full narrative detail.


Mitigations:

Architectural layers (MAESTRO):