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I am an Associate Professor of Computer Science and Engineering at Pennsylvania State University. I am also the co-director of the Systems and Internet Infrastructure Security Laboratory (SIIS), a research group focused on the study of security in diverse network and computer environments. I am a senior member of the IEEE and a member of ACM. Adding to my workload, I recently accepted the position as editor-in-chief of the ACM Journal Transactions on Internet Technology (TOIT).
My current research focus is on network, Internet, telecommunications, and systems security, language-based security, and technical and public policy issues in digital media. For a detailed description of my current activities and planned future research directions, see the research page. A brief professional biography is also available.
The pages linked from the menu at the left cover broadly my research, teaching, and personal activities. Those wishing to speak to me in a professional capacity should contact me via email. Email is probably the most relible way of contacting me (warning, responses may take a couple of days due to travel and other factors).
Note: Students wanting to work with me must be accepted to the University before contacting me, and thereafter only in person. I am not involved in admissions and sending me email will have no impact on your acceptance. Because of the large number of requests I receive, I will not read or respond to any such request received by email. Students interested in becoming a student at Penn State in Computer should contact the department directly.