Reza, database security engineer at Vela Pay, guards the payments ledger with an eight-layer database defense stack: least-privilege access control, unique authentication, encryption with keys kept apart, network isolation behind a bastion, parameterized queries, pgAudit logs shipped off-host, encrypted and tested backups, and monitoring. A 3 a.m. incident — a reporting credential signing in from a new country and mass-reading the accounts table — is caught by the monitoring layer and contained. A flaw-to-fix list shows the gaps closed: all privileges for every login, a security group open to the internet, a key stored beside the data, and input concatenated into SQL.

CY-MID-038Mid Level · Database Security

Database Security — The Database Defense Stack

A hands-on mid-level course that secures the databases behind a payments platform. Work the database defense stack - eight layers: Access Control, Authentication, Encryption, Network Isolation, Query Defense, Auditing, Backup & Recovery, and Monitoring - applying least privilege, TDE, private networking, parameterized queries, and audit logging across PostgreSQL, MySQL, and SQL Server. Strictly defensive. Four hands-on activities in every lesson.

15 hours8 chapters32 lessons225 activities8 labs

What you'll learn

Grant least-privilege access and authenticate database users strongly.
Encrypt data at rest and in transit and isolate the database network.
Stop injection with parameterized queries and audit sensitive access.
Secure backups and monitor for anomalous database activity.

Price:৳8,000