19 January 2012 Last updated at 15:00 ET
Megaupload, one of the internet’s largest file-sharing sites, has been shut down by officials in the US.
The site’s founder and others have been charged with violating piracy laws.
Federal prosecutors have accused it of costing copyright holders more than $500m (£320m) in lost revenue. The firm says it was diligent in responding to complaints about pirated material.
Investigators denied a link to recent protests against proposed piracy laws, according to the Wall Street Journal.
On Wednesday, thousands of websites took part in a “blackout” to protest against the Stop Online Piracy Act (Sopa) and the Protect Intellectual Property Act (Pipa).