Amazon Shares Best-Selling Music During Holidays, Madonna's Album Leak, and More in This Week's Digital Digest

TOP STORIES Amazon Touts Big Numbers for Prime During Holidays, Shares Best-Selling Songs and Albums  Amazon champions its holiday season number. Apple's (Very) Serious Chinese Competitor Xiaomi Is Now Bigger Than Uber  The company is now the most-valuable private startup in the world, beating out Uber on a valuation of $45 billion. Taylor Swift's '1989' Beats 'Frozen' As Top Selling Album of 2014  It came down to the wire, but in the final week of 2014, Taylor Swift’s '1989' finishes 2014 as the year’s top selling album. Apple's iPhone 6 Plus Phablet Wins the Holidays  New research points to Cupertino as leading the phablet charge, despite joining "late" in the game. Madonna's 'Devastating' Album Leak: Guy Oseary on the 'Circus Show' of Getting 'Rebel Heart' to Fans  Longtime manager Guy Oseary spoke to Billboard just days after successfully launching Madonna's new album... four-and-a-half months ahead of schedule. One Direction, George Strait Top StubHub's Year-End List of Biggest Sellers  StubHub has released its list of top-selling live acts of 2014. Sony Hack: New Evidence Points to Inside Job Say Security Experts  Cyber security firm Norse has found evidence that six individuals were behind the hack, including at least one former Sony Pictures employee.