—Collusive piracy is the main source of intellectual property violations within the boundary of a P2P network. Paid clients (colluders) may illegally share copyrighted content files with unpaid clients (pirates). Such online piracy has hindered the use of open P2P networks for commercial content delivery. We propose a proactive content poisoning scheme to… (More)
The USC GridSec project develops distributed security infrastructure and self-defense capabilities to secure wide-area networked resource sites participating in a Grid application. We report new developments in trust modeling, security-binding methodology, and defense architecture against intrusions, worms, and flooding attacks. We propose a novel… (More)
A major security threat to the normal use and legal sharing of peer-to-peer (P2P) resources is DDoS (distributed denial-of-service) attacks caused by file index poisoning. This type of attacks exploits the design vulnerability of P2P networks. By populating unprotected peers with poisoned file indexes, attacker can cause DDoS flooding attacks on arbitrary… (More)
QoS in a P2P video streaming system is evaluated in three stages: content generation, data delivery and video playback. We use jitter-free probability as the main performance metric to study <i>Quality of Data delivery</i> (QoD). A new model that incorporates both bandwidth and data availability of P2P network is proposed. Our model relies on a sharing… (More)
, we have begun to publish supplemental online-only issues on specific topics at irregular intervals. The most recent supplemental issue, Vol. 8S(1), features P2P Streaming, a topic for which we had received many submissions. Please have a look at this special issue in the Digital Library.