His research interests are in all areas of cryptography, and computer and systems security with a specific interest in phishing and new hetremorphic attacks. He has written dozens of papers, led panels, and given invited talks in fields ranging from Cryptography and Computer Security to Distributed Systems and Probabilistic Combinatorics. He has held research grants as a PI and Co-PI from the NSF and DARPA. He co-edited the book ‘Phishing & Countermeasures: Understanding the Increasing Problem of Electronic Identity Theft’ with Markus Jakobsson (Wiley Press, 2007), the first and still only comprehensive academic text dealing with the subject of Phishing.