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Zulfikar Ramzan, Ph.D. is currently a senior principal researcher with Symantec Security Response. He focuses on improving the security of the online experience, including understanding threats like phishing, online fraud, malicious client-side software, and web security. In general, Zulfikar’s professional interests span the theoretical and practical aspects of information security and cryptography. He is a frequent speaker on these issues and has coauthored more than 50 technical articles and one book. Zulfikar received his S.M. and Ph.D. degrees from the Massachusetts Institute of Technology in electrical engineering and computer science (with his thesis research conducted in cryptography and information security).