Professor Develops Internet Calling Surveillance Tool

Posted: August 29, 2005 at 1:00 am, Last Updated: November 30, -0001 at 12:00 am

By Rey Cheatham Banks

Xinyuan Wang, an assistant professor of information and software engineering at George Mason, is the principal investigator on a project that would help law enforcement identify the participants of peer-to-peer voice over Internet Protocol (VoIP) communication even if the communication is disguised by a system designed to render the participants anonymous.

Wang recently received a National Science Foundation grant that calls for the development of the prototype application to assist in the “critical but currently missing capability in the fight on crime and terrorism.”

This research will help prevent criminals from using the Internet to hide their communication from surveillance teams. Wang’s innovation allows unique signatures to be transparently embedded into the communicating VoIP flows in real-time. The embedded signature could uniquely identify the VoIP flows even if they are encrypted and made anonymous through the network.

A paper authored by Wang and fellow George Mason researchers Shiping Chen and Sushil Jajodia describing their preliminary results will be presented at the 12th ACM Conference on Computer and Communication Security (CCS 2005) in November.

Wang’s research interests are in computer and network security in general and attack attribution and source tracing in particular. His recent publications include “Tracking Anonymous Peer-to-Peer VoIP Calls on the Internet,” “On the Capacity of a Timing-Based Network Covert Channel in the Presence of Active Adversary” and “Active Timing-Based Correlation of Perturbed Traffic Flows with Chaff Packets.”

Posted Aug. 29, 2005

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