performing the threat modelling goal and understanding the flow of untrusted data through a Dapr deployment, and then adding a fuzzer for the affected component. We added a total of five fuzzers to Daprs intentionally attempts to exploit vulnerabilities, deploy malicious code, or compromise or disrupt a Dapr deployment, o�en for financial gain, espionage, or sabotage. 8 Dapr security audit 2023 We identify the to achieve. Fully untrusted Cloud service users Users managing the cloud services that a Dapr deployment interacts with. Partially untrusted Trustflow Trustflow describes how trust flows through a

advice when applicable. Since most issues are reflective of a custom configuration and deployment choices of the developers - and eventually the operators, a section on Orchestration Hardening throughout the cluster. One open source project that is widely adopted for securing Kubernetes deployment is Calico8. More information regarding Calico can be found here: https://docs.projectcalico.org/introduction/ Storing manifests containing secrets in repositories should be avoided. In order to ensure a safe deployment pipeline, a vault solution which allows for safe storage of sensitive information should be employed

Application Model Service Job Namespace Secret Volume Endpoint ConfigMap VolumeAttach CronJob Deployment ReplicaSet Pod Service autoscale ingress Task Worker cron canary Describes application Application Scopes - Parameters Application Configuration Application Reference Configured Parameters Deployment Scopes Configured Traits Component 1 - Application Scopes - Parameters Component Component

Application Model Service Job Namespace Secret Volume Endpoint ConfigMap VolumeAttach CronJob Deployment ReplicaSet Pod Service Task Worker cron autoscale ingress canary Separation of concerns Application Operator Infrastructure Operator Application Configuration Application Reference Deployment Scopes Configured Parameters Configured Traits Traits Trait Type Parameters Application Application

applying a deny-all policy and similar strategies. Moving on to the current Dapr software and deployment, it needs to be underlined that several new, additional features have been incorporated to Dapr