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Security researchers uncovered “EchoLeak,” a zero-click flaw in Microsoft 365 Copilot, exposing sensitive data without user action. Microsoft has mitigated the vulnerability.
The researchers at Aim Security dubbed the flaw “EchoLeak.” Microsoft told Fortune that it has already fixed the issue in Microsoft 365 Copilot and that its customers were unaffected.
A new attack dubbed 'EchoLeak' is the first known zero-click AI vulnerability that enables attackers to exfiltrate sensitive data from Microsoft 365 Copilot from a user's context without interaction.
Aim Labs contacted Microsfot about the flaw in January 2025. The tech giant finalized the patch for the vulnerability in May 2025. How Microsoft 365 Copilot Uses RAG and LLMs. Microsoft 365 Copilot is ...
Microsoft has fixed a dangerous zero-click attack in its Generative Artificial Intelligence (GenAI) model which could have allowed threat actors to silently exfiltrate sensitive corporate data without ...
HIGHLIGHTS Microsoft Copilot manipulated into leaking data - no breach, just prompts. EchoLeak exposes deeper AI flaws. Microsoft patched Copilot’s EchoLeak flaw, but experts warn the real ...
EchoLeak represents the first known zero-click attack on an AI agent, according to researchers at Aim Security, which released the findings in a Wednesday blog post.
A critical AI vulnerability, 'EchoLeak,' was discovered in Microsoft 365 Copilot by Aim Labs researchers in January 2025. This flaw allowed attackers to exfiltrate sensitive user data through ...
Microsoft 365 Copilot, the AI tool built into Microsoft Office workplace applications including Word, Excel, Outlook, PowerPoint, and Teams, harbored a critical security flaw that, according to ...
The Aim researchers said that EchoLeak is not just a run-of-the-mill security bug. It has broader implications beyond Copilot because it stems from a fundamental design flaw in LLM-based AI agents ...