The FBI says that the same group of online extortionists blamed for attacks on the Irish health system have also hit at least 16 US medical and first response networks in the past year.
The FBI said the cybercriminals using the malicious software dubbed ‘Conti’ have targeted law enforcement, emergency medical services, dispatch centres and municipalities.
The alert did not name the victims or go into detail about the nature or severity of the breaches.
The law enforcement agency said they were among more than 400 organisations worldwide targeted by the Conti gang.