Modern Kubernetes clusters can feel like black boxes when network or security issues arise. In this session, we share a real-world case study of how our team used Cilium, Hubble, and Tetragon to diagnose and resolve complex networking and security incidents in a multi-cloud environment. We’ll walk through the challenges we faced, demonstrate live observability with Hubble, and show how Tetragon’s runtime enforcement helped us catch and mitigate threats in real time. Attendees will leave with practical workflows and lessons learned to improve their own cluster visibility, security, and incident response.