security-engineer video for to assess network segmentation within your Google Cloud infrastructure, which encompasses both Production and Non-Production
To assess network segmentation within your Google Cloud infrastructure, which encompasses both Production and Non-Production infrastructure-as-a-service (IaaS) environments, you observe unrestricted communication among all VM instances within your custom network, despite the implementation of tag-based VPC firewall rules with a priority of 1000 for proper traffic segmentation. What are the most probable causes for this behavior?