Google Workspace offers Archived User licenses, which allow you to retain access to the data and communications of former employees without paying for a full user license. This option ensures compliance with the policy of retaining project data and communications in Google Vault while minimizing costs by avoiding unnecessary full user licenses.

To preserve all data related to the project, including emails, documents, and chats, and to prevent it from being deleted by users, you should create a hold in Google Vault. A hold ensures that data is preserved indefinitely, regardless of user actions, and applies to the users and data sources (such as Gmail, Drive, and Chats) associated with the project. This is the most efficient and compliant way to meet the litigation hold requirements.

The security investigation tool in Google Workspace allows you to identify the impacted users and messages. By marking the messages as phishing, you acknowledge their malicious nature, helping to protect the users. Adding the sender's email address to the Blocked senders list ensures that future messages from this sender will be automatically blocked, preventing recurrence of similar incidents.

A HAR file (HTTP Archive) records detailed information about the user's network activity, including HTTP requests and responses. This file can help diagnose issues with Gmail loading slowly or errors occurring, especially when they are intermittent. By generating a HAR file, you can provide valuable data for troubleshooting the issue and pinpoint any underlying network or browser-related issues.