Firmware updates for IoT devices are indispensable in industrial applications. In view of the increasing networking of industrial networks, efficiency and security are paramount. Microcontrollers often form the basis of these IoT devices. Due to their limited resources and the complex requirements in production environments, they require adapted and robust security mechanisms to prevent tampering and attacks during updates.

Attack Vectors and Challenges

Insecure firmware updates and manipulated software compromise the security of industrial IoT devices. Attackers inject malware, take control of microcontrollers, and use them as a starting point for further attacks. Such takeovers endanger the integrity of the entire network, as compromised devices intercept and modify sensitive data such as production figures or control commands. In addition, they manipulate the functions of the device, which can lead to production downtimes, faulty control systems, or even dangerous situation...