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To address inconsistencies in your project's Identity and Access Management (IAM) configuration and gain comprehensive visibility into IAM policy changes, user activity, service account behavior, and access to sensitive projects, leveraging Google Cloud's auditing capabilities is essential.​

Option A: While Cloud Monitoring's metrics explorer can track certain metrics, it is not designed to provide detailed logs of IAM policy changes or user activities.​

Option B: Cloud Audit Logs offer detailed records of administrative activities, including IAM policy changes and authentications. By creating log export sinks, you can forward these logs to a Security Information and Event Management (SIEM) solution, enabling correlation with other event sources and comprehensive analysis. This approach provides the necessary visibility into IAM configurations and user activities.​

Option C: Triggering Cloud Functions based on IAM policy changes and analyzing them with a policy simulator is a proactive approach. However, it may not provide the depth of historical data and comprehensive analysis capabilities that a SIEM solution offers.​

Option D: Deploying the OS Config Management agent focuses on VM configuration and patch management, which does not directly address IAM policy monitoring or user activity tracking.​

Therefore, Option B is the most effective solution to gain detailed visibility into IAM-related activities and address the identified inconsistencies.​

To remove personally identifiable information (PII) from files older than 12 months and archive the anonymized files for retention purposes, you can use Google Cloud Data Loss Prevention (DLP).

Create a Cloud DLP Inspection Job:

Go to the Cloud DLP section in the Google Cloud Console.

Create an inspection job that scans files in your Cloud Storage bucket for PII.

Configure the job to only target files that are older than 12 months.

Configure De-identification:

In the inspection job settings, configure de-identification actions to remove or obfuscate PII in the files.

Specify the transformation techniques appropriate for your data, such as masking or tokenization.

Archive Anonymized Files:

Set up the job to move the de-identified files to another Cloud Storage bucket designated for archival.

Ensure this bucket has the appropriate retention policies and access controls in place.

Delete Original Files:

After de-identification and archiving, configure the job to delete the original files from the source bucket.

This approach ensures that PII is effectively removed from old files and that the anonymized data is securely archived, maintaining compliance with data retention and privacy policies.

Cloud Data Loss Prevention Documentation

Setting Up DLP Jobs

Cloud Storage Documentation

"Isolate VMs using service accounts when possible" "even though it is possible to uses tags for target filtering in this manner, we recommend that you use service accounts where possible. Target tags are not access-controlled and can be changed by someone with the instanceAdmin role while VMs are in service. Service accounts are access-controlled, meaning that a specific user must be explicitly authorized to use a service account. There can only be one service account per instance, whereas there can be multiple tags. Also, service accounts assigned to a VM can only be changed when the VM is stopped."

To manage consumer user accounts created using the corporate domain name, you can use the transfer tool for unmanaged user accounts provided by Google Cloud Identity. Here’s how you can proceed:

Identify Unmanaged Accounts:

Use the Cloud Identity interface to identify consumer (unmanaged) accounts that exist with your corporate domain.

Initiate Transfer Process:

Use the transfer tool for unmanaged user accounts to initiate the transfer. This tool helps in converting unmanaged accounts (consumer accounts) into managed accounts.

User Notification:

Users with unmanaged accounts will receive an email notification prompting them to accept the transfer to the organization’s managed account system.

Accept Transfer:

Users need to follow the instructions in the email to accept the transfer. Once accepted, their accounts will be managed under your organization’s Cloud Identity setup.

Benefits:

Centralized Management: All user accounts under your corporate domain are managed centrally, ensuring compliance and security.

Enhanced Security: Managed accounts provide better control over security policies and access management.

References

Transfer tool for unmanaged users

Cloud Identity Documentation