top of page
Search

How a simple link allowed hackers to bypass Copilot's security guardrails - and what Microsoft did about it

  • Jan 19
  • 1 min read



On Wednesday, Varonis Threat Labs published new research documenting Reprompt, a new attack method that affected Microsoft's Copilot AI assistant.


Reprompt impacted Microsoft Copilot Personal and, according to the team, gave "threat actors an invisible entry point to perform a data‑exfiltration chain that bypasses enterprise security controls entirely and accesses sensitive data without detection -- all from one click."





  • Twitter
  • Instagram

© 2026 UnmissableAI

bottom of page