Scaling Container Security Without Slowing Developers

Are you struggling to implement robust container security at scale without creating friction with your development teams? In this episode, host Ashish Rajan sits down with Cailyn Edwards, Co-Chair of Kubernetes SIG Security and Senior Security Engineer, for a masterclass in practical container security. This episode was recorded LIVE at KubeCon EU, London 2025.

In this episode, you'll learn about:

• Automating Security Effectively: Moving beyond basic vulnerability scanning to implement comprehensive automation
• Bridging the Security-Developer Gap: Strategies for educating developers, building trust, fostering collaboration, and understanding developer use cases instead of just imposing rules.
• The "Shift Down" Philosophy: Why simply "Shifting Left" isn't enough, and how security teams can proactively provide secure foundations, essentially "Shifting Down."
• Leveraging Open Source Tools: Practical discussion around tools like Trivy, Kubeaudit, Dependabot, RenovateBot, TruffleHog, Kube-bench, OPA, and more.
• The Power of Immutable Infrastructure: Exploring the benefits of using minimal, immutable images to drastically reduce patching efforts and enhance security posture.
• Understanding Real Risks: Discussing the dangers lurking in default configurations and easily exposed APIs/ports in container environments.
• Getting Leadership Buy-In: The importance of aligning security initiatives with business goals and securing support from leadership.

Guest Socials: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Cailyn's Linkedin

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If you are interested in AI Cybersecurity, you can check out our sister podcast -⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ AI Cybersecurity Podcast

Questions asked:

(00:00) Intro: Container Security at Scale

(01:56) Meet Cailyn Edwards: Kubernetes SIG Security Co-Chair

(03:34) Why Container Security Matters: Risks & Exposures Explained

(06:21) Automating Container Security: From Scans to Admission Controls

(12:19) Essential Container Security Tools (Trivy, OPA, Chainguard & More)

(19:35) Overcoming DevSecOps Challenges: Working with Developers

(21:31) Proactive Security: Shifting Down, Not Just Left

(25:24) Fun Questions with Cailyn

Resources spoken about during the interview:

Cailyn's talk at KubeCon EU 2025