Medusa ransomware is dangerous enough that the FBI sent a 15-page memo warning people and entire industries. The agency says hundreds of victims have been reported and entire fields, from medicine to education and technology to manufacturing have been hit.

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

Federal authorities have issued a new warning about a dangerous ransomware scheme that is sweeping across the country. It gets its name from Greek mythology. Just as the priestess Medusa had snakes for hair, this ransomware snakes its way through the computer networks it gets into.