It was just a matter of time that cybercriminals move from MongoDB to other technologies such as ElasticSearch, MySQL, Cassandra, etc.

This spreadsheet tracks the attacks, with over 45,000 databases ruined. https://docs.google.com/spreadsheets/d/1QonE9oeMOQHVh8heFIyeqrjfKEViL0poLnY8mAakKhM/edit#gid=1781677175