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

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

First-ever zero-click attack targets Microsoft 365 Copilot. News. ... Echoes beyond Microsoft “EchoLeak marks a shift to assumption-of-compromise architectures,” Garg stated.

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.

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 critical AI vulnerability, 'EchoLeak,' was discovered in Microsoft 365 Copilot by Aim Labs researchers in January 2025. This flaw allowed attackers ...

Build AI into your enterprise content and knowledge management platform with 5 APIs that help you base your AI on enterprise ...

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 ...

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 ...