Security researchers uncovered “EchoLeak,” a zero-click flaw in Microsoft 365 Copilot, exposing sensitive data without user action. Microsoft has mitigated the vulnerability.

S ecurity researchers from Aim Labs uncovered a critical attack dubbed 'EchoLeak' impacting Microsoft 365 Copilot.The vulnerability could potentially allow bad actors to gain unauthorized access ...

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.

The vulnerability, called “EchoLeak,” lets attackers “automatically exfiltrate sensitive and proprietary information” from Microsoft 365 Copilot without knowledge of the user, according to findings ...

EchoLeak exploits Copilot’s ability to handle both trusted internal data (like emails, Teams chats, and OneDrive files) and untrusted external inputs, such as inbound emails.

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 ...

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.

The vulnerability, dubbed EchoLeak and assigned the identifier CVE-2025-32711, could have allowed hackers to mount an attack without the target user having to do anything.EchoLeak represents the ...

Jun 12, 2025 13:52:00 A zero-click attack method 'Echoleak' that sends emails to manipulate AI and steal confidential information has been discovered, and there is a risk to all AI systems such as ...