Microsoft said the bug meant that its Copilot AI chatbot was reading and summarizing paying customers' confidential emails, bypassing data protection policies.

The company is working on deploying a fix for impacted users.

Microsoft researchers said some companies are hiding promotional instructions in "Summarize with AI" buttons, poisoning chatbot memories to influence future recommendations.

Microsoft Copilot Chat is a full-fledged, AI-powered chatbot and content creation tool, featuring the power of ChatGPT with commercial data protection from Microsoft. Microsoft Copilot Chat, powered ...