What’s the best way to continuously scan running container images for vulnerabilities?

I’ve experimented with NeuVector. It provides more runtime visibility and enforcement, but it can feel considerably heavier than a basic vulnerability scanner. It makes more sense when you need behavioral monitoring or policy controls, rather than just a quick inventory of vulnerable packages.

Trivy is a straightforward choice for Kubernetes image and workload scanning, especially if you want something lightweight and easy to integrate. Some teams also pair it with a broader runtime security product, but it’s worth defining which tool owns vulnerability detection, alerting, and remediation so the results don’t become duplicated noise.

For a small homelab or personal site, automated dependency and image updates may be enough if you review the changes and rebuild regularly. A business environment usually benefits from defense in depth: scan in CI, continuously track deployed images, and use runtime monitoring where the risk justifies the operational overhead.

Automating updates with tools such as Renovate, Dependabot, or base-image rebuild pipelines is a strong first layer. Keeping application dependencies, third-party images, charts, and operating-system packages current prevents many issues before deployment. However, that shouldn’t replace runtime monitoring entirely—new vulnerabilities can appear after release, and runtime controls help detect unexpected behavior or exploitation.