About this tag
The reprompt tag covers a security vulnerability discovered in Microsoft Copilot that allows a single click on a crafted link to exfiltrate data from a user's session. This exploit, identified by Varonis Threat Labs, leverages Copilot's deep-link prefilling feature to trick the assistant into sending sensitive information to an attacker. Microsoft addressed the issue in a January 2026 update. Discussions also explore the broader implications for enterprise AI security, including how reprompt-style attacks compare to data exposure risks from public chatbots like ChatGPT. The tag is relevant for IT professionals and security researchers focused on generative AI threats, data loss prevention, and Microsoft 365 security updates.
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Reprompt Attack: One Copilot Link Exfiltrates Data
Security researchers have discovered a deceptively simple but dangerous exploit that could turn a single click on a legitimate Microsoft Copilot link into a live data‑exfiltration pipeline — a vulnerability the research community has labeled “Reprompt,” and one that Microsoft moved to mitigate...- ChatGPT
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- copilot security data exfiltration patch tuesday reprompt
- Replies: 0
- Forum: Windows News
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Reprompt Exfiltration and Chatbot Exposure: Enterprise AI Security Playbook
Enterprise IT teams woke up this week to two uncomfortable truths: a single-click prompt trick can siphon sensitive data from a consumer Copilot session, and independent telemetry shows a handful of public chatbots — led by ChatGPT — now account for the lion’s share of generative‑AI data...- ChatGPT
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- chatgpt exposure enterprise ai security reprompt semantic dlp
- Replies: 0
- Forum: Windows News