Managing security for databases using PostgreSQL and PostGIS is a critical aspect of designing reliable and safe spatial information systems, especially when handling sensitive geospatial data. PostgreSQL provides a robust and extensible security framework, and PostGIS, as a spatial extension, integrates seamlessly into this framework without introducing separate security mechanisms. Security management therefore relies on PostgreSQL’s core features such as authentication, authorization, roles, privileges, and data protection techniques, applied carefully to spatial data and functions. Authentication in PostgreSQL controls how users connect to the database. It is managed through the pg_hba.conf file, which specifies allowed connection types, client addresses, databases, users, and authentication methods. Secure methods such as SCRAM-SHA-256, MD5, or certificate-based authentication are preferred over trust-based access. For spatial databases used in networked environments, restricting connections by IP address and enforcing encrypted connections using SSL/TLS helps protect spatial data from unauthorized