Binary authorization
Binary authorization is a deploy-time security mechanism that ensures that only trusted binary files are deployed within your environments. In the context of containers and Kubernetes, binary authorization uses signature validation and ensures that only container images signed by a trusted authority are deployed within your Kubernetes cluster.
Using binary authorization provides you with tighter control over what is deployed in your cluster. It ensures that only tested containers and those approved and verified by a particular authority (such as security tooling or personnel) are present in your cluster.
Binary authorization works by enforcing rules within your cluster via an admission controller. This means that you can create rulesets only to allow images signed by an attestation authority to be deployed in your cluster. Your quality assurance (QA) team can be a good attestor in a practical scenario. You can also embed the attestation within your CI/CD...
