We can find and use security-related AMIs from AWS Marketplace as follows:

1. Go to the EC2 service on the dashboard.
2. Click Instances from the left sidebar and click Launch Instance.
3. Select AWS Marketplace from the left sidebar.
4. Scroll down to the Security subheading under the Infrastructure Software heading in the main content area.

5. Click on the hyperlink with numbers under the Security subheading. As of the time of writing, 701 products are available. We should see the AMIs tagged with security, as follows:

We can further filter results based on parameters such as Operating System, Software Free Trial, Software Pricing Plans, and Support from the left sidebar. Once we decide on a product, we can follow the recipes within Chapter 6, Working with EC2 Instances, to complete launching the instance.