The stolen records of 20 million users of a popular Android app store have been published online by a hacker who claims to have 19 million more. Not all app stores are the same. Android users have access to the official Google Play Store, complete with nearly three million (2,870,985) apps available for download. Then there are the manufacturer app stores, of which the best known are probably the Samsung Galaxy Store and the Huawei AppGallery.
Source: Forbes