Like so many companies before it, Spotify has suffered a data breach. Thankfully, only one customer’s non-sensitive account data was accessed, but the service is taking preemptive steps to ensure other users are not affected.
The Spotify team recommends updating the Spotify app when prompted on Google Play, which should be shortly (follow the instructions here to see if you have latest.) The update has the side affect of deleting offline playlists, but should fix the vulnerability that led to the data hack.
The team also advises against downloading and installing Spotify from any source other than Google Play, the Amazon Appstore, or m.spotify.com.
The instructions are for Android users only. No need to do anything if you use Spotify on any other platform.