Johnson and Johnson is warning more than 100,000 medical patients who use certain insulin pumps they could be targeted by hackers.
In a letter, Johnson and Johnson said its Animas One-Touch Ping insulin pump has a bug causing a potential cybersecurity risk.
Hackers could hijack the device and force it to deliver unauthorized and possibly lethal insulin doses.
But the company said the probability of that happening is extremely low and there have not been any reports of actual attempts to hack the Animas One-Touch Ping device.
Johnson and Johnson also said the pump has features for advanced protection should patients be concerned.