Update _index.md

Author: mich-elle-luna

content/operate/rc/security/database-security/_index.md

@@ -34,3 +34,7 @@ We strongly recommend enabling TLS for any application transmitting sensitive da
 ## Disk encryption
 
 Redis Cloud provides encryption for all data stored on disk in Redis databases. See our [encryption at rest documentation]({{< relref "/operate/rc/security/encryption-at-rest.md" >}}) for specific details.
+
+## Continue learning with Redis University
+
+See the [Redis Cloud security overview course](https://university.redis.io/course/0b1hkhejlitg3x) for modules.