If someone or something is advertising they have a trove of copyrighted material, the standard procedure for law enforcement is to subpoena the cloud provider for the IP of the user, then the ISP for the subscriber's physical name/address. When they confiscate their computer they'll find the data on there.
Has that ever happened in a copyright case? I get the impression that police are too busy with actual crime to investigate anything less than mega-size infringement.
Yes, frequently. Typically media does not cover smaller instances of a copyright investigation and thus the impression that this only happens in mega-sized instances.
Has that ever happened in a copyright case? I get the impression that police are too busy with actual crime to investigate anything less than mega-size infringement.