3. 2 Million Redis and 1. 9 Million MongoDB Services: The Steady Background of Exposed Data Stores Month after month, the same services appear in internet scan data at the same order of magnitude: Redis in the millions, MongoDB in the millions, and a long tail of databases below them.
Source: [Dev.to](https://dev.to/stark_zhuang_df5076f35c68/32-million-redis-and-19-million-mongodb-services-the-steady-background-of-exposed-data-stores-3fa6)