• Hardened Images Are Free. • Docker Hardened Imagesare now free, covering Alpine, Debian, and over 1,000 images including databases, runtimes, and message buses. • For security teams, this changes the economics of container vulnerability management. • DHI includes security fixes from Docker’s security team, which simplifies security response. • Platform teams can pull the patched base image and redeploy quickly. • But free hardened images raise a question: how should this change your security practice?
Article Summaries:
- Docker has released its Hardened Images (DHI) free of charge, covering Alpine, Debian, and over 1,000 other images such as databases, runtimes, and message buses. The move shifts the economics of container vulnerability management, as Docker now handles security fixes for the base layers, allowing platform teams to pull patched images quickly. DHI introduces a “waterline” concept: vulnerabilities below the line are managed by Docker, while those above remain the customer’s responsibility. The images also offer supply‑chain isolation by limiting exposure to community‑image trust risks. Finally, DHI aims to streamline policy enforcement and reduce the volume of findings that need manual triage.
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