Challenges in Rendering and Maintaining Trustworthiness for Long-Living Software Systems

Trustworthiness plays a key role in acceptance and adoption of software by the end-users. When maintaining long-living software systems, trustworthiness has to be addressed since trust of the end-user is volatile and can change over time. In this paper, we discuss the challenges regarding trustworthiness of long-living software systems. Trustworthiness should be considered in the whole life-cycle of a long-living system, i.e., in all development phases aiming at building trustworthiness into the core of the system at design-time and later maintaining it during run-time. But, our focus in this paper is on challenges in requirements engineering and also planning for the run-time activities, e.g., what are the needed monitor interfaces, what are the planned actions and how are the execution interfaces for performing those actions.