We segregate attacks into two categories – targeted and opportunistic – based on whether the attacker compromises a specific target (targeted) or a number of intermediate targets to fulfill his end goal (opportunistic). We assume that opportunistic attackers consider targets indistinguishable except for their vulnerabilities, and are interested in acquiring as many targets as possible. We there...

The file-sharing literature has focused mainly on whether file-sharing has decreased record sales, with less attention paid to the size of any decline. Although there is still some contention, most studies have concluded that filesharing has decreased record sales. What has not been noted is that most estimates indicate that the file-sharing has caused the entire enormous decline in record sale...

A peer-to-peer (P2P) file sharing network provides a resource sharing platform for Internet users. To increase higher-degree resource sharing, heterogeneous P2P file sharing networks need a way to collaborate and communicate with each other. Based on the approach of interconnecting heterogeneous P2P file sharing networks, users on one P2P file sharing network can share resources and search data...

Peer-to-peer (P2P) networking has emerged as a promising technology that enables distributed systems to operate in decentralized manner. P2P networks are based on model where each node the network can act both client and server, thereby enabling data resource sharing without relying centralized servers. The gained considerable attention recent years due its potential provide scalable, fault-tol...

Existing p2p file sharing networks doesn’t always give their users abilities to make an effective and fast searches for particular data. In this paper we introduce some improvements for main subset of these networks, especially for bittorrent and descript some well known methods of search query routing, used in other networks that may be useful for our purposes too. We describe some ideas of mo...

We report on a social-software file-sharing service within a large company. User-created collections of files were associated with increased usage of the uploaded files, especially the sharing of files from one employee to another. Employees innovated in the use of the collections features as “information curators,” an emergent lead-user role in which one employee creates named, described colle...