File-sharing sites are being subverted for web attacks
Peer-to-peer (P2P) file-sharing networks, which let users trade movies, music and software online, are increasingly being used to trick PCs into attacking other machines, experts say.
Computer scientists have previously shown how P2P networks can be subverted so that several connected PCs gang up to attack a single machine, flooding it with enough traffic to make it crash. This can work even if the target is not part of the P2P network itself.
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