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• Running large Kubernetes clusters is challenging despite community improvements
• Defaults are not always enough and best practices should be followed
• Avoid list calls and use informers to improve performance
• Memory and CPU buffer should be maintained to handle bad events
• Streaming lists in Kubernetes 1.27 can improve memory usage

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• The current common Kubernetes risk assessment framework is based on the CIS benchmarks for Kubernetes
• The framework only covers security misconfigurations and doesn't go deeper than the security configurations of the various elements
• Real attacks can start by multiple elements expanding beyond security misconfigurations
• There is a need for an additional risk-assessment framework that can go deeper than the Kubernetes configurations, verifying that all other attack methods, steps, and stages are covered
• MITRE has crafted an ATT&CK matrix for containers/Kubernetes, which consists of tactics and techniques used in real attacks

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• Operators are automated runbooks that can pose security risks if not properly secured
• Bad Robot is a tool that can scan operator manifests for vulnerabilities
• Developers should be explicit about the permissions and resources an operator can access
• Restricting an operator to specific namespaces and resources can improve security
• A pipeline and static analyzer can help detect vulnerabilities in operators