Abstract
In order to ensure data security and monitor data behavior, eBay has developed Eagle, which can detect anomalous user behavior based on user profiles and can intelligently protect data security of Hadoop ecosystem in real-time. By analyzing the kernel density estimation (KDE) algorithm and source code implemented in Eagle, we recognize that there are two security risks: One is that user profiles are models of operations, but the objects of operations are not analyzed; The other is that the owner of HDFS audit log files is not authenticated. Consequently, the attacker can bypass Eagle and form attack of APT combined with default permissions of Hadoop. In this paper, we analyze the two risks of Eagle, propose two kinds of attack methods that can bypass anomaly detection of Eagle: co-frequency operation attack and log injection attack, and establish threat model of which feasibility is verified experimentally. Finally, we present SeEagle, a semantic-enhanced anomaly detection for securing Eagle, including user authentication and file tagging modules. Our preliminary experimental evaluation shows that SeEagle works well and extra overhead is acceptable.
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Acknowledgements
This work is supported by the National High Technology Research and Development Program (“863” Program) of China under Grant No. 2015AA016009 and the National Natural Science Foundation of China under Grant No. 61232005. The authors would like to acknowledge Xiaoyi Chen, Bin Yang, Dong Huo and Xuxin Fan for their support for our preliminary experiments. We are also grateful to Fenmei Li for her valuable suggestions and thorough proofread for this paper.
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© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Xin, W., Shen, Q., Yang, Y., Wu, Z. (2018). SeEagle: Semantic-Enhanced Anomaly Detection for Securing Eagle. In: Matoušek, P., Schmiedecker, M. (eds) Digital Forensics and Cyber Crime. ICDF2C 2017. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 216. Springer, Cham. https://doi.org/10.1007/978-3-319-73697-6_17
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DOI: https://doi.org/10.1007/978-3-319-73697-6_17
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