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Distributed denial of service (DDoS) attacks still remains as one of the largest concerns for online businesses. Although an HTTPS compatible scheme is necessary for many online services, several previously proposed defense schemes fail to combine both HTTPS compatibility with practicality. In this paper, a novel defense architecture that blocks malicious traffic far from the protected servers is...
Recent proliferation of Wireless LAN devices has created a high demand for roaming systems that enable network connections at visited institutions using users' home accounts. We have been operating eduroam, the roaming system for international research and educational institutions. However, if the roaming system is to be introduced into more than a thousand of research and educational institutions...
Recent use of web services has spread over a wide variety of application areas. Users are requested to disclose private information for the use of web services. Such a disclosure is facing the risk of leaking private information. Privacy leakage is becoming one of the serious social problems. For the better use of web services, it is necessary to provide a reliable scheme for privacy management. There...
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