A new report released by Check Point has security personnel working in the health care industry particularly concerned and they are warning their colleagues about the existence of “Fireball.”

Fireball, released by a Chinese operation, has infected approximately 250 million computers worldwide. According to the report, the malware hijacks web browsers and turns computers into “zombies” and then manipulates the user’s browsers and changes default home pages and search engines into fake ones. It can also execute code on the user’s machine, which allows the hackers to steal the user’s credentials. It also has the capability to spy on users and to exfiltrate sensitive information.

It is estimated that 5.5 million computers have been infected with Fireball in the United States. Health care entities should be aware of this new threat and follow instructions to block it from their systems.