# Cis Gworkspace 3.1.3.1.1

> Ensure users cannot delegate access to their mailbox

- Skill: `cyberstrikeus/cis-gworkspace-3-1-3-1-1` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-gworkspace-3-1-3-1-1`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-gworkspace-3-1-3-1-1/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-gworkspace-3-1-3-1-1

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# 3.1.3.1.1 Ensure users cannot delegate access to their mailbox

## Overview

| Property                  | Value                 |
| ------------------------- | --------------------- |
| **CIS ID**                | 3.1.3.1.1             |
| **Level**                 | L1                    |
| **Profile Applicability** | Enterprise Level 1    |
| **Assessment Type**       | Manual                |
| **Section**               | Gmail > User Settings |

## Description

Mail delegation allows the delegate to read, send, and delete messages on their behalf. For example, a manager can delegate Gmail access to another person in their organization, such as an administrative assistant.

## Rationale

Only administrators should be able to delegate access to a user's mailboxes.

## Impact

Existing delegations will be hidden, when this feature is disabled.

## Default Value

`Let users delegate access to their mailbox to other users in the domain` is **unchecked**

## Audit

To verify this setting via the Google Workspace Admin Console:

1. Log in to [https://admin.google.com](https://admin.google.com) as an administrator
2. Select **Apps**
3. Select **Google Workspace**
4. Select **Gmail**
5. Under `User Settings` - `Mail delegation`, ensure `Let users delegate access to their mailbox to other users in the domain` is **unchecked**

## Remediation

To configure this setting via the Google Workspace Admin Console:

1. Log in to [https://admin.google.com](https://admin.google.com) as an administrator
2. Select **Apps**
3. Select **Google Workspace**
4. Select **Gmail**
5. Under `User Settings` - `Mail delegation`, set `Let users delegate access to their mailbox to other users in the domain` to **unchecked**
6. Select **Save**

## CIS Controls

| Controls Version | Control                                               | IG 1 | IG 2 | IG 3 |
| ---------------- | ----------------------------------------------------- | ---- | ---- | ---- |
| v8               | 3.3 Configure Data Access Control Lists               | x    | x    | x    |
| v7               | 14.6 Protect Information through Access Control Lists | x    | x    | x    |