The FBI and the U.S. Cybersecurity and Infrastructure Security Agency are warning email users against a dangerous ransomware scheme.

Cybersecurity officials released a joint advisory with the FBI warning against the increasing threat of ransomware.

The FBI, MS-ISAC and CISA released a joint cybersecurity advisory about the Medusa ransomware variant, advising people and organizations to use multifactor authentication and other strategies to prevent attacks from the ransomware-as-a-service provider that has targeted hundreds since 2021.