Federal authorities are warning users of Gmail, Outlook, and other popular email services about dangerous ransomware linked to a group of developers who have breached hundreds of victims' data, including people in the medical,

Medusa ransomware now operates as a RaaS model, recruiting affiliates from criminal forums to launch attacks, encrypt data, and extort victims worldwide.

The agencies warn that anyone who uses webmail services such as Gmail and Microsoft Outlook are vulnerable to having their data taken hostage for ransom. In an advisory, CISA and the FBI offered suggestions for protecting users against Medusa.