A diabetic’s successful hack of his own insulin pump raised the spectre of malicious device-based attacks, but Medtronic doesn’t think there’s much to worry about. Medtronic Inc. (NYSE:MDT) isn’t in an uproar over recent reports of a hacked insulin pump that could discretely deliver dangerous doses of insulin to a wearer. “To our knowledge, there has never been a single reported incident outside of controlled laboratory experiments in more than 30 years of device telemetry use, which includes millions of devices worldwide,” a director of PR from Medtronic’s insulin pump subsidiary MiniMed Inc. told TuDiabetes.org, an online social network for diabetics.