Megaupload Assisted U.S. Prosecution of Smaller File-Sharing Service
Eighteen months before Megaupload’s operators were indicted in the United States, the company complied with a secret U.S. search warrant targeting five of its users, who were running their own file-sharing service using Megaupload’s infrastructure, according to interviews and newly unsealed court documents.
More at: http://www.wired.com/threatlevel/2012/11/megaupload-investigation-roots/