00955nas a2200157   4500000000100000008004100001260001200042100001300054700001300067700001600080700001800096245007500114856007200189520052200261022001400783       2022                            d  c2022-081 aYu Zheng1 aZheng Li1 aXiaolong Xu1 aQingzhan Zhao00aDynamic defenses in cyber security: Techniques, methods and challenges  uhttps://www.sciencedirect.com/science/article/pii/S235286482100047X3 awe conduct a comprehensive and concrete survey of recent research efforts on dynamic defense in cyber security. Specifically, we firstly introduce basic concepts and define dynamic defense in cyber security. Next, we review the architectures, enabling techniques and methods for moving target defense and mimic defense. This is followed by taxonomically summarizing the implementation and evaluation of dynamic defense. Finally, we discuss some open challenges and opportunities for dynamic defense in cyber security.  a2352-8648