I have an Android app published to Google Play Store (and its apk file is also published to some Chinese stores by somebody that I don't know). Today I noticed a very strange situation in Google Analytics data: I never release version 1.6.3, but I noticed it is there, having 37 sessions and keep increasing. I notice that all 37 sessions are from China. I can understand if they just publish my apk file to a store, but how can they modify my app version as well? And what can I do for this?
