I don’t think anyone should be terribly surprised by this.  Hardware vendors haven’t taken the notion of securing their devices seriously and now it seems they will have to.  Hopefully this problem has a solution in place before someone gets seriously hurt due to the presence of malware and such on hospital systems.

Computerized hospital equipment is increasingly vulnerable to malware infections, according to participants in a recent government panel. These infections can clog patient-monitoring equipment and other software systems, at times rendering the devices temporarily inoperable.

While no injuries have been reported, the malware problem at hospitals is clearly rising nationwide, says Kevin Fu, a leading expert on medical-device security and a computer scientist at the University of Michigan and the University of Massachusetts, Amherst, who took part in the panel discussion.

Software-controlled medical equipment has become increasingly interconnected in recent years, and many systems run on variants of Windows, a common target for hackers elsewhere. The devices are usually connected to an internal network that is itself connected to the Internet, and they are also vulnerable to infections from laptops or other device brought into hospitals. The problem is exacerbated by the fact that manufacturers often will not allow their equipment to be modified, even to add security features.

In a typical example, at Beth Israel Deaconess Medical Center in Boston, 664 pieces of medical equipment are running on older Windows operating systems that manufactures will not modify or allow the hospital to change—even to add antivirus software—because of disagreements over whether modifications could run afoul of U.S. Food and Drug Administration regulatory reviews, Fu says.

http://www.technologyreview.com/news/429616/computer-viruses-are-rampant-on-medical-devices/