This article provides a step by step guide to building a Google Cloud waste scanner from source, running it across every project your credentials can see, pricing each finding from the Cloud Billing Catalog API, and drafting the cleanup. A suite of Python checks is built to cover Compute Engine, Cloud SQL, Storage, DNS, KMS, Secret Manager, Artifact Registry, Filestore, Cloud Logging, Cloud Monitoring and GKE. https://github.com/xbill9/zombiescan-gcp What Gets Left Behind ...