KubeCon + CloudNativeCon Europe 2026 (opens in new tab)

Exactly one week ago, Sven and I had the incredible opportunity to give our very first talk at KubeCon + CloudNativeCon 2026: How To Break Multi-Tenancy Again and Again …and What We Can Learn From It. We discussed the challenges of namespace-based multi-tenancy and presented real-world exploits in Kubeflow, Istio, and Traefik that bypass threat boundaries between namespaces and workloads. Based on these problems, we developed a methodology to assess and address them. You can find the methodol...