Federal authorities have issued an advisory warning people of Medusa ransomware that has breached the data of more than 300 people since February.

In an advisory posted earlier this week, government officials warned that a ransomware-as-a-service software called Medusa, which has launched ransomware attacks since 2021, has recently affected hundreds of people. Medusa uses phishing campaigns as its main method for stealing victims' credentials, according to CISA.

The FBI and the U.S. Cybersecurity and Infrastructure Security Agency (CISA) issued a joint advisory this week, alerting organizations to the escalating danger posed by the Medusa ransomware-as-a-service (RaaS) scheme.