In these few days I noticed a strange device in Spotify Connect that was listening to music of some new artists because on Last.FM they have something like 4-5 scrobbles.
I started investigating and I realized that this person was listening to a playlist (which I can't find right now) by another person for 13 hours straight. I went on Last.FM and all my scrobbles for the last 13 pages are something like in the screenshot I'm uploading.
1) I changed password and disconnected every device from my account. Can I do anything to report this to Spotify itself? Maybe they can have a deeper look for things like the IP that was listening to that music, the playlist and the account to report.
2) My idea is that someone bought some stolen Spotify accounts somewhere and started listening to these new artist to boost their audience, the scrobbles and other data. This could be a big problem.
Now it's been 4 hours and nothing happened, I'm trying now to delete every scrobble from my Last.FM. I hope some of the Spotify Staff can see this issue and I hope this is the right place.