# Shipping safer container runtimes in 2026

URL: https://chainguard-docs-preview-git-1016-404s.chainguard.app/software-security/learning-labs/ll202512.md
Last Modified: September 28, 2026
Tags: Learning Labs, Chainguard Containers

Learning Lab for December 2025 on strategies to secure your software supply chain and ship safer containerized runtimes in 2026


The December 2025 Learning Lab with Erika Heidi focuses on strategies to improve the security of your software supply chain and ship safer container runtimes in 2026.

[Watch the video on YouTube](https://www.youtube.com/watch?v=z5SNwBC4T-Q)


## Sections

- [00:00](https://www.youtube.com/watch?v=z5SNwBC4T-Q) Intro
- [02:52](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=172s) Why Devs need to care
- [04:48](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=288s) XZ Utils incident
- [09:43](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=583s) tj-actions/changed-files incident
- [12:42](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=762s) Sha1-Hulud Second Coming
- [17:11](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=1031s) Trending threat models
- [32:42](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=1962s) Mitigating risks
- [45:02](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=2702s) Concrete Dev actions this sprint
- [50:47](https://www.youtube.com/watch?v=z5SNwBC4T-Q&t=3047s) Chainguard Containers: CVE Comparisons

## Resources

- [Slide deck](/downloads/learning-lab-202512.pdf)
- [Chainguard Containers overview](https://edu.chainguard.dev/chainguard/containers/overview/)
- [Chainguard Libraries overview](https://edu.chainguard.dev/chainguard/libraries/introduction/overview/)
- [Migrating to Chainguard Containers](https://edu.chainguard.dev/chainguard/containers/migration/migrations-overview/)
- [Inspecting Chainguard Containers](https://edu.chainguard.dev/chainguard/containers/troubleshooting/inspecting-containers/)
- [Using Digestabot with Chainguard Containers](https://edu.chainguard.dev/chainguard/containers/security-and-compliance/updating-containers/digestabot/)
- [Using Renovate with Chainguard Containers](https://edu.chainguard.dev/chainguard/containers/security-and-compliance/updating-containers/renovate/)
- [Images Directory](https://images.chainguard.dev/)