A Secure Tekton Task by using Confidential Containers

Software supply chain attack is an emerging threat for today’s enterprises. An attacker first gets an internal network access of the target enterprise, typically by using social engineering. Next the attacker gets an administrator access of a software supply chain of the enterprise. Finally the attacker injects a backdoor into a built artifact and steals confidential information or digital assets from the enterprise, or even worse from customers.

A critical attack surface here is the administrator of the software supply chain. Confidential Containers is an open source project to protect containers from administrators by using trusted execution environments (TEEs). It protects a Kubernetes pod from a cluster administrator by running the pod inside of a TEE and validating the pod by remote attestation.

This talk presents a use case of Confidential Containers to protect a Tekton task. You will understand how Confidential Containers protects a task and artifacts even when the cluster administrator is compromised.