A cloud security analyst is concerned about security vulnerabilities in publicly available container images.

Using CIS-hardened images (A): Center for Internet Security (CIS) images are pre-hardened and configured for best practices, reducing vulnerabilities.

Using watermarked images (B): Watermarking does not contribute to security hardening.

Using digitally signed images (C): Verifies authenticity but does not address vulnerabilities within the container.

Using images that have an application firewall (D): Firewalls offer runtime protection but don’t secure the container image itself.