The U.S. warned that the DPRK is behind a novel ransomware campaign targeting the health care industry on Wednesday, raising concerns about the country’s ability to hold hostage critical life-saving services across the globe.

According to a joint advisory by the Federal Bureau of Investigation, Cybersecurity and Infrastructure Security Agency and the Department of the Treasury, North Korea-backed hackers have been distributing a strain of ransomware known as Maui since at least May 2021.

The FBI states that targets included servers containing critical health care information, such as electronic health records, diagnostic services, imaging