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.

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

This is EchoLeak, a critical vulnerability in Microsoft 365 Copilot that lets hackers steal sensitive corporate data without a single action from the victim.

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 ...

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

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 ...

Microsoft 365 Copilot has a feature called RAG (Search Augmentation Generation) that refers to the contents of files stored in mailboxes and OneDrive, chat history in Teams, etc. to answer ...