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—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)
Digital content owners have attempted to use content poisoning to disrupt illegal distribution of copyrighted files in peer-to-peer (P2P) systems. This paper provides an analytical model to quantify the impact of content poisoning. Tradeoffs between content poisoning and download efficiency are revealed. In particular, we apply this poisoning model to(More)
Cloud-based distributed systems such as Google AppEngine, Amazon Web Service, Facebook, SalesForce.com and many others play an increasingly important role in upgrading the web services and Internet applications. Future computer architects, software engineers, and system designers need to understand the principles and underline technologies, in order to(More)