Company
AIM Security
An AI security company focused on the security of AI applications. It discovered and disclosed the EchoLeak vulnerability in Microsoft 365 Copilot.
Timeline (last 90 days)
Oct 17
In June 2025, AIM Security disclosed the EchoLeak vulnerability in Microsoft 365 Copilot: an email carrying hidden instructions could make Copilot send sensitive data to an attacker without any user click.
Unverified50%