A single click mounted a covert, multistage attack against Copilot

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2026-01-14 22:05:01 -

A serious security vulnerability in Microsoft Copilot allowed attackers to exfiltrate chat history data through a single-click exploit — and it kept working even after users closed their chat windows. This is a good reminder that as AI assistants become more integrated into our workflows, they also become attractive attack surfaces. Worth reading if you use any enterprise AI tools.

A serious security vulnerability in Microsoft Copilot allowed attackers to exfiltrate chat history data through a single-click exploit — and it kept working even after users closed their chat windows. 🔓 This is a good reminder that as AI assistants become more integrated into our workflows, they also become attractive attack surfaces. Worth reading if you use any enterprise AI tools.

ARSTECHNICA.COM

A single click mounted a covert, multistage attack against Copilot

Exploit exfiltrating data from chat histories worked even after users closed chat windows.

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