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<a target="_blank" rel="noopener" href="https://fatcat.wiki/container/k7cf45sp7faezjq6aasftgokc4" style="color: black;">IEEE Open Journal of the Computer Society</a>
In this article, we put forward the substantial challenges in cyber resilience in the domain of autonomous systems and outline foundational solutions to address these challenges. These solutions fall into two broad themes: resilience-by-design and resilience-by-reaction. We use several application drivers from autonomous systems to motivate the challenges in cyber resilience and to demonstrate the benefit of the solutions. We focus on some autonomous systems in the near horizon (autonomous<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/ojcs.2020.3006807">doi:10.1109/ojcs.2020.3006807</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/sngt6fii3rhi7hiovtbjj5ptuy">fatcat:sngt6fii3rhi7hiovtbjj5ptuy</a> </span>
more »... d and aerial vehicles) and also a little more distant (autonomous rescue and relief). For resilience-by-design, we focus on design methods in software that are needed for our cyber systems to be resilient. In contrast, for resilience-byreaction, we discuss how to make systems resilient by responding, reconfiguring, or recovering at runtime when failures happen. We also discuss the notion of adaptive execution to improve resilience, execution transparently and adaptively among available execution platforms (mobile/embedded, edge, and cloud). For each of the two themes, we survey the current state, and the desired state and ways to get there. We conclude the paper by looking at the research challenges we will have to solve in the short and the mid-term to make the vision of resilient autonomous systems a reality. This article came out of discussions that started at the NSF-sponsored Grand Challenges in Resilience Workshop held at Purdue in 2019 with the co-authors contributing to going into the depth of the issues and then this article. INDEX TERMS Resilience, autonomous systems, resilience by design, resilience by reaction. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/ VOLUME 1, 2020 155 156 VOLUME 1, 2020 FELIX XIAOZHU LIN received the B.S. and M.S. degrees
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