Microsoft says bug causes Copilot to summarize confidential emails
Bleeping Computer
by Sergiu GatlanFebruary 18, 2026
Microsoft says a Microsoft 365 Copilot bug has been causing the AI assistant to summarize confidential emails since late January, bypassing data loss prevention (DLP) policies that organizations rely on to protect sensitive information.
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Originally published on Bleeping Computer on 2/18/2026