You recently noticed a recurring daily spike in network usage in your Google Cloud project.

Enable VPC Flow Logs and send the output to BigQuery for analysis.

Enable Firewall Rules Logging for all allowed traffic and send the output to BigQuery for analysis.

Configure Packet Mirroring to send all traffic to a VM. Use Wireshark on the VM to identity traffic utilization for each VM in the VPC.

Deploy a third-party network appliance and configure it as the default gateway. Use the third-party network appliance to identify users with high network traffic.