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

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.

EchoLeak exposes deeper AI flaws. Microsoft patched Copilot’s EchoLeak flaw, but experts warn the real threat is architectural, not accidental.

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

Researchers have said that Microsoft Copilot had a critical zero-click AI vulnerability that was fixed before hackers stole sensitive data. Called ‘EchoLeak,’ the attack was mounted by Aim ...

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 Microsoft Copilot and ...

EchoLeak affected Microsoft 365 Copilot, the AI assistant integrated across several Office applications, including Word, Excel, Outlook, PowerPoint, and Teams. According to researchers at Aim ...

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.

The vulnerability, dubbed “EchoLeak,” was found in Microsoft Corp.’s 365 Copilot generative AI tool in January and reported to Microsoft at the time.