> Researchers Reveal Reprompt Attack Allowing Single-Click Data Exfiltration From Microsoft Copilot
[DATE: 15/01/2026 15:09]
[LANGUAGE: EN]
Cybersecurity researchers have disclosed details of a new attack method dubbed Reprompt that could allow bad actors to exfiltrate sensitive data from artificial intelligence (AI) chatbots like Microsoft Copilot in a single click, while bypassing enterprise security controls entirely.
"Only a single click on a legitimate Microsoft link is required to compromise victims," Varonis security