As a new interdisciplinary subject, cyber security has attracted more and more attention from researchers and practitioners in academia and industry all over the world. While new cyber security threats keep emerging, researchers are also developing new technologies to help build securer, safer and more resilient digital systems. Applications of any new cyber security technology is however not simple because of many reasons such as the heterogeneity and large scale of computer systems and networks, the volume/velocity/variety of data in the hyber-connected world, the socio-technical complexity of new threats and attacks, and the intrinsic difficulties of building secure systems involving both computers, things and humans. The rapid development of many new computing architectures and concepts such as cloud/edge/fog computing, mobile and ubiquitous computing, Internet of Things/Internet of Everything, big data analytics, artificial intelligence, privacy-aware computing, hybrid human-machine computing, blockchain and distributed ledgers are making the landscape even more complicated and challenging, calling for more research in these new frontiers in cyber security.
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