New malware has been uncovered that targets databases to install cryptocurrency mining software. Dubbed PG_MEM, the malware could potentially hit any of the more than 800,000 PostgreSQL-managed databases if they have weak passwords. According to cloud-native cybersecurity company Aqua, PG_MEM is installed after a brute force attack finds a weak password on a PostgreSQL-managed database. PostgreSQL is a popular object-relational database management system that is used by databases with internet connectivity. There are well over 800,000 such databases, with almost 300,000 located in the United S…