Pacemakers, insulin pumps and many other medical devices have become potential targets for cybercriminals who could tamper with the equipment's operation or intercept personal information.
With the rapid proliferation of wireless connectivity and even smartphone apps, medical technology is increasingly exposed to hackers and malware in ways that could put millions of Americans' health and finances at risk.
The threats posed by targeted attacks and inadvertent malware infections are attracting the attention of federal regulators, who last week called on a wide range of players in the health care industry to band together to talk about solutions.
The issue is even on the radar of the Department of Homeland Security, after President Obama declared public health — including medical devices — part of the nation's "critical infrastructure."
"If our health care system would fail, a lot of people, a lot of sick people, would die," said Mike Ahmadi, global director of medical security with contractor Codenomicon.
Concern about the issue has been building for some time. The Government Accountability Office reported on the digital weaknesses of medical devices two years ago in a study that found the FDA does not evaluate new medical devices for their vulnerabilities to intentional attacks.
Three months later, the issue got fresh attention when the Showtime thriller "Homeland" depicted a fictional political assassination by hackers who infiltrated the vice president's pacemaker and induced a heart attack. Former Vice President Dick Cheney later called that scenario "credible" based on his own experience with a pacemaker.
Fraud, however, is a more immediate risk than targeted attacks on health. Pacemakers and infusion pumps transmit data about therapies and patients that can be intercepted, experts say, and outdated or weak security measures have allowed a continuous stream of breaches of patients' health data from hospitals and their contractors.