Blog | G5 Cyber Security

Google Authenticator: Admin Trust & Security

TL;DR

While Google administrators can manage access to services requiring Google Authenticator, they cannot directly bypass a user’s configured 2-Step Verification (2SV) unless the user loses their recovery methods. However, admins have powerful tools and access that require careful trust and monitoring. This guide explains what admins *can* do, how to mitigate risks, and best practices for securing your Google Workspace environment.

Understanding Admin Capabilities

  1. Account Access & Control: Admins can reset passwords and temporarily grant themselves access to a user’s account (as the user) in emergencies. This doesn’t bypass 2SV directly, but it allows them to investigate issues or recover data if the user is locked out.
  2. Security Key Management: Admins can enforce security key requirements for users, which adds another layer of protection beyond passwords and Google Authenticator.
  3. 2-Step Verification Enforcement: Admins *can* force all users to enable 2SV, including Google Authenticator. They can also create policies around acceptable 2SV methods.
  4. Backup Code Management (Limited): Admins cannot see a user’s existing backup codes. However, they can generate new ones for the user if the original codes are lost or compromised.
  5. Data Access: Admins have access to various Google Workspace data depending on their role and permissions. This includes email, Drive files, Calendar events, etc.

Risks Associated with Admin Trust

Mitigating Risks & Best Practices

  1. Principle of Least Privilege: Grant administrators only the minimum level of access necessary to perform their job duties. Avoid giving all admins full “Super Admin” privileges. Use custom roles where possible.
  2. Strong Admin Password Policies: Enforce strong, unique passwords for all admin accounts and require regular password changes. Implement multi-factor authentication (MFA) on *all* admin accounts – don’t rely solely on Google Authenticator for admins; consider hardware security keys.
  3. Audit Logging & Monitoring: Regularly review audit logs to detect suspicious activity, such as unusual login attempts or unauthorized data access. Google Workspace provides detailed audit trails. Use tools like the Security Investigation Tool.
  4. Regular Security Audits: Conduct periodic security audits of your Google Workspace configuration and policies to identify potential vulnerabilities.
  5. Background Checks & Training: Perform thorough background checks on all administrators and provide regular security awareness training.
  6. Emergency Access Procedures: Establish clear procedures for handling emergency access requests, including a documented approval process and detailed logging requirements. Avoid granting permanent “break glass” accounts; use temporary access solutions instead.
  7. Security Key Enforcement: Encourage or require the use of hardware security keys (like YubiKeys) for administrators. This significantly reduces the risk of phishing attacks and account compromise.
    gcloud workspace users security-keys enable --user=admin@example.com
  8. Context-Aware Access: Implement Context-Aware Access policies to restrict access based on factors such as location, device type, and user identity. This limits the impact of a compromised admin account.

    Configure these through Google Workspace Admin console > Security > Access and data control > Context-Aware Access.

  9. Review Third-Party Apps: Regularly review third-party apps connected to your Google Workspace environment and revoke access for any unauthorized or suspicious applications.

What Admins *Cannot* Do

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