As Kubernetes becomes the backbone of modern infrastructure, securing multi-tenant clusters becomes a top priority for platform engineering teams. In this talk, we will delve into the realm of Zero-Trust architecture, exploring how it can bolster security measures and mitigate lateral surface attack risks within multi-tenant environments. We'll showcase best practices and practical guidance for implementing a robust Zero-Trust model, including access control through Paralus, network policy-based isolation, and runtime security mechanisms through Falco. Join us to gain valuable insights, real-life examples, and step-by-step strategies to fortify your multi-tenant Kubernetes clusters against potential threats and breaches. Let's elevate the security standards of our clusters together and foster a safer cloud-native ecosystem.