Container image security is a critical aspect of ensuring the integrity and trustworthiness of software applications deployed in containers. To effectively harden your container image security strategy, it's essential to establish a baseline by scanning just your base image before adding modifications, prioritize vulnerabilities based on severity, CVSS score, and availability of fixes, and define a strategy that balances effort and risk. It's also crucial to understand your security boundaries, know your tools, automate remediation, and adopt a developer-first approach to container security. By following these guidelines, you can reduce the vulnerability count in most cases and maintain a secure container image security baseline.