Software Updates in Safety and Security Co-engineering.

The application of Industry 4.0 in automation systems leads to a higher interconnectivity among machines, devices, sensors, the cloud and humans. Nevertheless, this paradigm leaves open the possibility of new cyber-security threats and attacks against industrial control systems, even for those that perform safety-critical functions. Consequently, software updates are needed in order to fix the vulnerabilities and bugs discovered on these systems. This article presents a review of safety and security standards with respect to software updates. In addition to this, a roadmap of standards for the development of safe and secure systems is provided.