It's a cool publicity stunt for Anna's, and perhaps the hackers responsible for getting the data simply wanted to show it off and leave Spotify with some egg on

It's a cool publicity stunt for Anna's, and perhaps the hackers responsible for getting the data simply wanted to show it off and leave Spotify with some egg on their face. I know I wouldn't be able to stop myself from publishing it if I was in their position, foolish as it may be.