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With the increasing sophistication of attacks, there is a need for network security monitoring systems that store and examine very large amounts of historical network flow data. An efficient storage infrastructure should provide both high insertion rates and fast data access. Traditional row-oriented Relational Database Management Systems (RDBMS) provide satisfactory query performance for network...
With the proliferation of Internet access across the globe, as well as the advancement of many new devices and next generation networks, there is no surprise that malware infection via web browsing is still one of the most significant threats to Internet users today. Over the past several years we have also seen the increase in advanced targeted attacks against corporations which steal intellectual...
Besides a large set of malware categories such as worms and Trojan horses, Advanced Persistent Threat (APT) is another more sophisticated attack entity emerging in the cyber threats environment. In this paper we propose a model of the APT detection problem as well as a methodology to implement it on a generic organization network. From our knowledge, the proposed method is the first to address the...
Short Message Service (SMS) spam is increasingly becoming a problem for many telecommunication service providers. Not only do SMS spam messages use mobile network resources abusively, but also in many cases they represent malware propagation vectors for mobile devices. In this work, we propose a network-based online detection method for SMS spam messages. The proposed scheme uses robust text signatures...
Content Distribution Network (CDN) architectures face a wide range of security threats. In this paper, we compare the cost of achieving low and high security for different CDN architectures. We reviewed the existing and emerging systems, identified the threats that they face, defined the general security requirements and considered the mechanisms available to meet the requirements. To assess the security...
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