A view of how the PGMiner botnet works to infect database servers (Source: Palo Alto Networks) Researchers with Palo Alto Networks' Unit 42 are tracking a relatively new cryptomining botnet called "PGMiner," which is targeting vulnerable PostgreSQL database servers to illegally mine for monero. PostgreSQL is one of the most-used open-source relational database management systems for production environments. The Unit 42 report says this might be the first time a botnet has targeted this type of database to mine for cryptocurrency. "We named the cryptocurrency mining botnet 'PGMiner' after its delivery channel and mining behavior," the Unit 42 researchers note in their report. "At its core, PGMiner attempts to connect to the mining pool for monero mining."