Megaupload

[Derrick]

Megaupload Limited, better known for its closed websites including the top-15 file hosting service megaupload.com, is an online Hong Kong-based company established in 2005 that ran a number of online services related to file storage and viewing. The domain names were seized and the sites shut down by the U.S. Justice Department on 19 January 2012, following their indictment and arrests of the owners for allegedly operating as an organization dedicated to copyright infringement.

The shutdown led to what activist group Anonymous calls "the single largest Internet attack in its history" in retaliation. The case has not yet been heard at trial.

Source: Wikipedia