Zhenyu Zhong

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— While the concept of collaboration provides a natural defense against massive spam emails directed at large numbers of recipients , designing effective collaborative anti-spam systems raises several important research challenges. First and foremost, since emails may contain confidential information, any collaborative anti-spam approach has to guarantee(More)
Statistical-based Bayesian filters have become a popular and important defense against spam. However, despite their effectiveness, their greater processing overhead can prevent them from scaling well for enterprise-level mail servers. For example, the dictionary lookups that are characteristic of this approach are limited by the memory access rate,(More)
—While the concept of collaboration provides a natural defense against massive spam e-mails directed at large numbers of recipients, designing effective collaborative anti-spam systems raises several important research challenges. First and foremost, since e-mails may contain confidential information, any collaborative anti-spam approach has to guarantee(More)
— Millions of new domains are registered every day and the many of them are malicious. It is challenging to keep track of malicious domains by only Web content analysis due to the large number of domains. One interesting pattern in legitimate domain names is that many of them consist of English words or look like meaningful English while many malicious(More)
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