有公司专门做这个，看看下面的，他们已经拿到court order， 4家isp肯定会把个人信息给出
The case involves NGN Prima Productions Inc, a Canadian company active in the US copyright troll scene gathering cash settlements from alleged sharers of its action movie “Recoil.”
Not content with trolling within the confines of the U.S., recently NGN filed a lawsuit in the Federal Court in Montreal.
The company claimed that data collected by anti-piracy company Canipre between September 1 and October 31 showed that 50 IP addresses allocated to four ISPs – 3 Web Corp., Access Communications Co-Operative Ltd., ACN Inc., and Distributel Communications Ltd – had engaged in copyright infringement of Recoil.
To this end, the ISPs should be ordered to hand over the names and addresses of the subscribers in question so that NGN could pursue them for damages, the company insisted.
On Monday November 19 the Federal Court in Montreal granted the request and ordered the four ISPs to hand over the data within two weeks, in Microsoft Excel format and encrypted on a CD.