March 10, 2017 at 8:06 PM

Nearly a million new forms of malware are unleashed on the world every day. Manufacturers of software for smartphones, laptops and security cameras, as well as banks, retailers and government agencies, release upgrades frequently to try to protect customers and assets.

Yet the millions of people with implanted medical devices typically never receive software upgrades to address security vulnerabilities for the gadgets in their bodies.

"It used to be we only had to worry about breaches of our computers and smartphones," said Roman Lysecky, an associate professor in the University of Arizona Department of Electrical and Computer Engineering.

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