Prof. Angelos Keromytis

Bio:
Angelos Keromytis is an Associate Professor at the Department of Computer Science at Columbia University, and director of the Network Security Laboratory. He received his B.Sc. in Computer Science from the University of Crete, Greece, and his M.Sc. and Ph.D. from the Computer and Information Science (CIS) Department, University of Pennsylvania. He is the author and co-author of more than 130 papers on refereed conferences and journals, and has served on over 60 conference program committees. He is an associate editor of the ACM Transactions on Information and Systems Security (TISSEC). He recently co-authored a book on using graphics cards for security, and is a co-founder of StackSafe Inc. His current research interests revolve around systems and network security, and cryptography.

Webpage: http://www.cs.columbia.edu/~angelos

Denial Of Service Attacks and Resilient Overlay Networks

Abstract:
Denial of service (DoS) attacks have been the subject of considerable research in the past few years, with interest remaining high due to their increasing use in fraud and extortion schemes against online businesses. Many of the proposed mechanisms to date require extensive re-engineering of the Internet, in terms of protocols, endpoint software, and the routing infrastructure. In this talk, I will discuss the Secure Overlay Services (SOS) architecture, which provides service to hosts targeted by DDoS attacks by using a combination of overlay networking, distributed firewalling, and simple packet filtering. I will describe the original architecture as well as three extensions, WebSOS, MOVE and SpreadSpectrum, that address different deployment and use strategies of the basic approach.

Legal notice