Hacking medical devices and cybersecurity in public health is the subject of recent discussions. The Federal Office for Information Security (BSI) aims to improve transparent communication regarding cybersecurity risks of networked medical devices. To this end, the BSI initiated the project ManiMed – Manipulation of Medical Devices to facilitate a trustful communication and cooperation between manufacturers, security researchers, and authorities. This study targets the current cybersecurity state of smart and connected medical devices and illustrates what kind of questions the medical device industry is facing by making their devices smart. This article focuses on security vulnerabilities identified in the DANA Diabecare RS insulin pump to illustrate what kind of questions the medical device industry faces by making their devices smart. The exemplifying vulnerabilities affected the pump's proprietary, Bluetooth Low Energy (BLE)-based communication and affected patient safety.