Marios Hadjielftheriou received a Diploma in Electrical and Computer Engineering in 1998 from the National Technical University of Athens, Greece, and a PhD degree in Computer Science from the University of California, Riverside in 2004. He has been employed as a Visiting Researcher at the University of Hong-Kong, the City University of Hong-Kong, and the Boston University. Since September 2005, he has been working as an inventive researcher at the Database Research Group of AT&T Labs - Research. He has published many papers in top database conferences and journals. His research interests are in the areas of data mining, data stream management, database indexing, and data privacy and security.