Hackers can target unsuspecting Android users by utilizing sideloaded apps. There are other ways for users to download apps that are dangerous.
While these changes will enhance the safety of the Play Store, it is important for users to remain vigilant against Android malware. All this information is available on Google's blog post i.e. Later this year, existing developers will also be required to update and verify their accounts. Google has announced that starting from August 31, all new Android developers must provide a valid D-U-N-S number when creating their accounts. In addition to the D-U-N-S number requirement, Google will also enhance the 'Contact details' section on app listings by renaming it as 'App support' and providing more comprehensive information about each developer.