The United States No Electronic Theft Act (NET Act), a federal law passed in 1997, provides for criminal prosecution of individuals who engage in copyright infringement under certain circumstances, even when there is no monetary profit or commercial benefit from the infringement.

Merely uploading and downloading files on the internet did not fulfill this requirement, meaning that even large-scale online infringement could not be prosecuted criminally.

[1] This state of affairs was underscored by the unsuccessful 1994 prosecution of David LaMacchia, then a student at the Massachusetts Institute of Technology, for allegedly facilitating massive copyright infringement as a hobby, without any commercial motive.

In addition, it added a threshold for criminal liability where the infringer neither obtained nor expected to obtain anything of value for the infringement – "by the reproduction or distribution, including by electronic means, during any 180-day period, of 1 or more copies or phonorecords of 1 or more copyrighted works, which have a total retail value of more than $ 1,000" (17 USC 506(a)(1)(B)).

In response to the NET Act, the US Sentencing Commission stiffened sanctions for intellectual property infringement.