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• Webassembly can be used to run third-party code inside the same process without launching another process
• Dapper started exploring the use of webassembly in 2019
• The zero dependency webassembly runtime for Go was used to embed webassembly virtual machine into a Go process
• The HTTP middleware component was introduced to allow users to change requests or response
• The Wasm runtime is embedded into the Dapper sidecar to run the filter

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• The custom plugin monitor feature on the scope can be exploited to write a script into the circle folder node problem detector, which can lead to persistency.
• Misconfigurations and file writing abilities of the Pod can be exploited to execute scripts as root and establish persistence.
• Kubernetes security controls do not take into account middleware components, and permission and CSP-based methods may need to be rethought.
• A multi-level approach to cluster security is necessary, including understanding the impact of misconfigurations, log-based detection, agent-based detection, and sensor-based detection.
• It is important to understand the components in worker nodes to ensure cluster security.