Worked on the percona/pmm repository to deliver a security-hardening feature focused on database administration and security best practices. The main contribution involved adjusting PMM user privileges on RDS performance_schema, removing unnecessary write access and enforcing the principle of least privilege. This change reduced the risk of unintended writes and improved security compliance for managed database environments. Accompanying documentation, written in Markdown, was updated to clearly specify that the PMM user now requires only SELECT access on performance_schema. All modifications were tracked under a dedicated commit, ensuring transparent governance and alignment with organizational security standards for database access control.