MongoDB Security Best Practices are essential for securing a MongoDB deployment, as unsecured instances of MongoDB were recently discovered running openly on the internet. The most popular installer limits network access to localhost by default, and security is addressed in detail in the Security Manual. Users can enable alerts to detect if their deployment is internet exposed through MongoDB Cloud Manager or Ops Manager, and a webinar provides guidance on securing a deployment. Additionally, users who have experienced a security incident with MongoDB are encouraged to create a vulnerability report. The company encourages users to follow best practices and takes security seriously, as evident in the efforts to educate customers and provide resources for securing their deployments.