https://www.enterprisedb.com/blog/how-to-secure-postgresql-security-hardening-best-practices-checklist-tips-encryption-authentication-vulnerabilities?utm_source=google&utm_medium=cpc&utm_campaign=Q42020_NA&gclid=CjwKCAiAxeX_BRASEiwAc1QdkWAhYgEInsAJQgU_gtMlUQMcUhLpFNnyTMuvo5v-_e0dcBE37SXUphoC3xAQAvD_BwE