A Kubernetes token is a credential that lets a workload, script, or user authenticate to the Kubernetes API. In many clusters it is tied to a service account and may be mounted into a pod from a Secret, which makes it easy for applications to use without manual login.
These tokens matter because the Kubernetes API controls deployments, secrets, logs, and permissions across the cluster. If malware, a compromised container, or a stolen build artifact captures a token, the attacker may query the API, inspect resources, or move deeper into the environment. Defenders reduce risk by giving service accounts the minimum permissions needed, using short-lived or bound tokens where possible, restricting Secret access, and rotating credentials when exposure is suspected. Secret scanning and runtime monitoring can also help detect token leakage before it becomes cluster compromise.