Her main research interests are in data and application security. She has been Computer Scientist in the Computer Science Laboratory at SRI, CA (USA). She has been a visiting researcher at the Computer Science Department of Stanford University, CA (USA), and at the ISSE Department of George Mason University, VA (USA). She is co-author of the book ``Database Security,'' Addison-Wesley, 1995. She is co-recipient of the ACM-PODS'99 Best Newcomer Paper Award.