Objective: Implement an encryption at-rest strategy that balances key management complexity and control for sensitive and non-sensitive data, ensuring FIPS 140-2 L1 compliance.

Solution: Use Google default encryption for non-sensitive data and Cloud Key Management Service (KMS) for sensitive data.

Steps:

Step 1: Store non-sensitive data using Google Cloud’s default encryption, which automatically encrypts data at rest without additional configuration.

Step 2: For sensitive data, use Cloud KMS to create and manage encryption keys.

Step 3: Configure key rotation policies for the keys managed by Cloud KMS to meet compliance requirements.

Step 4: Ensure that all data encryption keys used by Cloud KMS comply with FIPS 140-2 Level 1 standards.

By using Google default encryption for non-sensitive data and Cloud KMS for sensitive data, you can manage encryption efficiently while maintaining control over key residency and rotation for sensitive data.

To enforce access control policies for applications and resources in Google Cloud, the recommended service is Identity-Aware Proxy (IAP).

Identity-Aware Proxy (IAP):

IAP allows you to control access to your applications and resources based on the identity of the user and the context of the request. It integrates with IAM to provide fine-grained access control, ensuring that only authorized users can access specific resources.

IAP helps enforce security policies at the application layer, providing an additional layer of protection beyond traditional network-based security measures.

References

Identity-Aware Proxy documentation

https://cloud.google.com/access-transparency Access approval Explicitly approve access to your data or configurations on Google Cloud. Access Approval requests, when combined with Access Transparency logs, can be used to audit an end-to-end chain from support ticket to access request to approval, to eventual access.

Objective: Reduce the risk of Google Cloud user accounts being compromised.

Solution: Implement strong password policies and post-SSO 2-Step Verification using security keys.

Steps:

Step 1: In Active Directory, configure a domain password policy with strong settings (e.g., complexity, length, expiration).

Step 2: In the Google Admin console, navigate to the Security settings.

Step 3: Enable 2-Step Verification and configure it to use security keys for post-SSO verification.

Step 4: Ensure all users enroll in the 2-Step Verification with security keys.

Using strong password policies in Active Directory along with security keys for 2-Step Verification post-SSO provides enhanced security against account compromises.

The greatest risk to regulatory compliance stems from violations of the Principle of Least Privilege and the lack of enforced configuration/hardening standards. Regulatory compliance typically mandates strict control over infrastructure and sensitive systems.

Option A (Greatest Risk): Broad IAM roles violate the principle of least privilege, which is a fundamental compliance requirement (e.g., ISO 27001, PCI DSS). Allowing users to create and manage critical resources (VMs) without a pre-defined hardening process means new resources can be deployed in a non-compliant, vulnerable state (e.g., unpatched, open ports, default configurations). This lack of control and excessive access poses an immediate and high risk to the security posture and compliance.

Option B (Risk Reduction): Uniform bucket-level access reduces risk by enforcing a consistent policy for all objects in a bucket, preventing individual object-level IAM policies that can lead to misconfigurations and unauthorized access.

Option C (Risk Reduction): Mandating CMEK is a security-enhancing control that reduces risk by giving the customer exclusive control over the encryption keys for sensitive data, which is a common requirement in regulated environments.

Option D (Necessary Control): Providing the audit team access to Cloud Audit Logs is a compliance requirement for monitoring, accountability, and forensic investigation, not a risk.

Extracts:

" The principle of least privilege states that a user should only be granted the minimum permissions necessary to perform their work. Overly permissive roles introduce a significant risk. " (Source 5.1)

" Non-compliant configurations, such as unhardened virtual machines or resources with insufficient security controls, are a major source of security breaches and regulatory findings. " (Source 5.2)

Access Google Cloud Console:

Log in to the Google Cloud Console with administrative privileges.

Navigate to the " IAM & Admin " section.

Set Session Length Timeout:

Go to the " Settings " page within IAM & Admin.

Locate the " Session control " settings.

Configure the session length timeout to a shorter duration, such as 15 or 30 minutes. This ensures that user sessions expire automatically after the specified time of inactivity.

Apply and Enforce the Policy:

Save the changes and ensure the new session timeout policy is applied across all users and services.

Communicate the new policy to employees, highlighting the importance of session security and the rationale behind the change.

Additional Security Measures:

Consider implementing additional measures such as automatic screen locks and secure session management practices.

Educate employees on the importance of logging out of their sessions and securing their devices when not in use.

Understanding Organization Policies:

Organization policies are rules that can be set at different levels of the resource hierarchy in GCP to enforce governance and compliance.

These policies can be set at the organization node, folders, and projects, and they are inherited down the hierarchy unless explicitly overridden.

Hierarchy and Policy Inheritance:

The provided resource hierarchy has an organization node (Example.com), folders (Folder 1 and Folder 2), and a project (Project 2) under Folder 2 with a specific VPC (VPC A).

Each node in the hierarchy can have its own policies, and these policies are inherited by child nodes unless overridden.

Analyzing the Policies in the Hierarchy:

Organization Node Policy:

json

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{ " constraint " : " constraints/compute.restrictLoadBalancerCreationForTypes " , " listPolicy " : { " allValues " : " DENY " } }

This policy at the organization node denies all load balancer types.

Folder 2 Policy:

json

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{ " constraint " : " constraints/compute.restrictLoadBalancerCreationForTypes " , " listPolicy " : { " deniedValues " : [ " INTERNAL_TCP_UDP " , " INTERNAL_HTTP_HTTPS " ] } }

This policy at Folder 2 denies the creation of INTERNAL_TCP_UDP and INTERNAL_HTTP_HTTPS load balancers.

Project 2 Policy:

json

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{ " constraint " : " constraints/compute.restrictLoadBalancerCreationForTypes " , " listPolicy " : { " deniedValues " : [ " EXTERNAL_TCP_PROXY " , " EXTERNAL_SSL_PROXY " ] } }

This policy at Project 2 denies the creation of EXTERNAL_TCP_PROXY and EXTERNAL_SSL_PROXY load balancers.

Policy Application to VPC A:

Since policies are inherited, VPC A (which is within Project 2 under Folder 2) will be affected by the policies of both Folder 2 and Project 2.

Combining the denied values from both Folder 2 and Project 2:

From Folder 2: INTERNAL_TCP_UDP, INTERNAL_HTTP_HTTPS

From Project 2: EXTERNAL_TCP_PROXY, EXTERNAL_SSL_PROXY

Conclusion:

VPC A will have the following load balancer types denied: INTERNAL_TCP_UDP, INTERNAL_HTTP_HTTPS, EXTERNAL_TCP_PROXY, EXTERNAL_SSL_PROXY.

Objective: Create a Service Account that can list Compute Engine instances in the project following Google-recommended practices.

Solution: Create a custom role and assign it to the Service Account.

Steps:

Step 1: Open the Google Cloud Console.

Step 2: Navigate to the IAM & Admin page and select " Roles " .

Step 3: Click on " Create Role " and define a new role with a suitable name and description.

Step 4: Add the permission compute.instances.list to the custom role.

Step 5: Save the custom role.

Step 6: Go to the " Service Accounts " section.

Step 7: Create a new Service Account or select an existing one.

Step 8: Assign the newly created custom role to the Service Account.

By creating a custom role with the specific permission to list Compute Engine instances, you follow the principle of least privilege, which is a recommended security practice.

Objective: Ensure private communication between application tiers in different GCP Organizations.

Solution: Use VPC peering to enable private communication without traversing the public internet.

Steps:

Step 1: Open the Google Cloud Console.

Step 2: Navigate to the VPC Network Peering page.

Step 3: Create a new VPC peering connection in the project hosting the application tier.

Step 4: Specify the VPC network in the other organization (hosting the storage tier) to peer with.

Step 5: Accept the peering request in the other project.

Step 6: Configure the necessary routes and firewall rules to allow traffic between the peered VPC networks.

VPC peering allows you to connect two VPC networks privately and directly, ensuring that traffic between them does not traverse the public internet.

Cloud Identity-Aware Proxy (Cloud IAP) provides a way to control access to your web applications and resources running on Google Cloud. It works by verifying the identity of a user trying to access the application and supports multi-factor authentication (MFA). Cloud IAP can restrict access to users on the corporate network and also supports access over the internet securely.

Steps:

Enable Cloud IAP: In the Google Cloud Console, navigate to the IAP section and enable IAP for your web application.

Configure OAuth Consent Screen: Set up the OAuth consent screen to manage how users grant access.

Set Up Authentication: Use Google Identity Platform to manage users and enable two-factor authentication.

Add Users: Grant users access to the application by adding their identities in the IAP settings.