Youki Kadobayashi

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Today's Multi-player Online Games (MOGs) are challenged by infrastructure requirements, because of their server-centric nature. Peer-to-peer networks are an interesting alternative, if they can implement the set of functions that are traditionally performed by centralized authoritative servers. In this paper, we propose a <i>zoned federation model</i> to(More)
The cybersecurity information exchange framework, known as CYBEX, is currently undergoing its first iteration of standardization efforts within ITU-T. The framework describes how cybersecurity information is exchanged between cybersecurity entities on a global scale and how the exchange is assured. The worldwide implementation of the framework will(More)
Widespread deployment of the Internet enabled building of an emerging IT delivery model, i.e., cloud computing. Albeit cloud computing-based services have rapidly developed, their security aspects are still at the initial stage of development. In order to preserve cybersecurity in cloud computing, cybersecurity information that will be exchanged within it(More)
In this paper, we evaluate the performance of machine learningbased methods for detection of phishing sites. In our previous work [1], we attempted to employ a machine learning technique to improve the detection accuracy. Our preliminary evaluation showed the AdaBoost-based detection method can achieve higher detection accuracy than the traditional(More)
The Datagram Congestion Control Protocol (DCCP) has been proposed as a transport protocol which supports real-time traffic using window-based flow control. We investigate the DCCP performance for various traffic flows, focusing on how DCCP flows affect TCP flows and vice versa. Through those simulations, we examine an unfair bandwidth distribution problem(More)
Cross-site scripting (XSS) attacks target Web sites with cookie-based session management, resulting in the leakage of privacy information. Although several server-side countermeasures for XSS attacks do exist, such techniques have not been applied in a universal manner, because of their deployment overhead and the poor understanding of XSS problems. This(More)