CNET
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Altnet, a company that sells music and other digital goods through file-swapping services, sued the Recording Industry Association of America on Wednesday for alleged patent infringement.
Altnet's lawsuit says that antipiracy companies Overpeer and MediaDefender are still on the hook, however. Overpeer is a "spoofing" company that posts millions of false or corrupted files on networks such as Kazaa, trying to make real files harder to find. Media Defender uses "interdiction" techniques, which essentially clog networks with requests that block real download efforts.
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