Kim Dotcom, the larger-than-life personality accused by the U.S. of operating a website used to pirate half a billion dollars in entertainment, introduced a new version of his controversial file-storage service on Sunday. Mega, as his new service is known, features a technology that won’t necessarily shield the company or its users from liability in copyright infringements but may make it harder for copyright holders to identify illegal content.

Mr. Dotcom’s Megaupload site was shut down a year ago by the U.S. Federal Bureau of Investigation during its largest-ever criminal copyright enforcement. The FBI alleged Megaupload was used to pirate entertainment content.

The launch of a similar site may antagonize the U.S., since the Justice Department has labored in court for a year to have the 39-year-old, originally from Germany, extradited to the U.S. to stand trial. Read more