Hyun-A Park joined the AI Lab as a visiting scholar in the spring of 2010. She received her PhD and MS degrees in Information Security from the Graduate School of Information Management and Security (GSIMS) at Korea University, Seoul, in 2005 and 2010, respectively. She received her BS degree from the Department of Mathematics at Korea University, Seoul, in 2003. Her research interests center on information security, including encrypted retrieval systems and privacy-enhancing technology (PET). While at the Lab, Ms. Park will examine security protocols for information sharing and collaboration in social networks, trust systems for mobile commerce applications, and KDD techniques over security-related data.