To create a secure MongoDB platform, it's essential to implement environmental control and database management best practices. This includes running MongoDB in a trusted environment with secure development lifecycle, deployment best practices, and a "Defense in Depth" approach to layer security controls. Strategies for controlling access include network filters, binding IP addresses, running in VPNs, dedicated OS user account, file system permissions, query injection prevention, and physical access controls. Additionally, monitoring database performance and availability is crucial to identify potential exploits in real-time, and MongoDB offers tools such as mongostat, mongotop, Ops Manager, and Cloud Manager for comprehensive monitoring. Regular backups and point-in-time recovery are also essential, and investing in skills through courses and consulting services can ensure a more secure environment.