On Monday, I wrote about  cyber-security expert and diabetic Jay Radcliffe, who hacked into his insulin pump at a big conference of his brethren in Las Vegas. The Idaho resident says he hacked into his pump as a way of alerting the med-tech industry of security issues associated with his life-sustaining medical device.

Despite receiving a plethora of media coverage, Radcliffe never revealed the maker of his insulin pump. But on Thursday, dissatisfied with the response he received, he outed the company: Fridley-based Medtronic Inc., the world's leading maker of insulin pumps.

Ironically, at the company's annual shareholder meeting on Thursday, new CEO Omar Ishrak was asked about hacking and medical device security. He said it's something the company "takes very seriously," but that hacking has occurred only in "controlled settings."

Going forward, Ishrak said the company will work to improve product security.

In a webcast Thursday, Radcliffe says there is no security on the device. While diabetics should take to heart security concerns, he emphasized they should continue using their pump.

Meanwhile, he's switched to a new brand of pump: Johnson & Johnson's Animas pump.

Janet Moore covers medical technology for the Star Tribune.