This spring Comcast, to our pleasant surprise, started consistently refusing to hand over names, phone numbers and addresses of its customers, accused of copyright infringement, to the infamous copyright troll Prenda Law (John Steele). Prenda, formally represented by Paul A. Duffy, sued Comcast, trying to wrestle ISP into compliance with subpoenas.
A week ago TorrentFreak wrote a comprehensive article about this: “Comcast Protests “Shake Down” of Alleged BitTorrent Pirates.” This article ends with the following paragraph:
Whatever the outcome, Comcast’s protest is part of a growing trend in which Internet providers object to handing over subscriber data in mass-BitTorrent cases. Previously, Verizon did the same, successfully arguing that it has an obligation to protect the privacy of its customers.
Further reading: Comcast crushes porn owner’s “shakedown” of subscribers by Jeff John Roberts (PaidContent). In addition, I recommend reading comments to the TorrentFreak’s article mentioned above.