GWS Security Auditor

Open-source Google Workspace security posture assessment tool
Audit your GWS tenant against CIS Benchmarks, CISA SCuBA Baselines, and industry best practices.

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Description

GWS Security Auditor is a Python-based tool that automatically evaluates your Google Workspace configuration against four industry-standard security frameworks. It connects to your tenant and performs read-only API calls, collects configuration data, evaluates 227 security checks (including 24 critical-severity checks), and generates actionable reports in HTML, JSON, and CSV formats.

Key Features

• 227 security checks across 4 frameworks (CIS, CISA SCuBA, Google, Other)
• Critical severity system -- 24 checks flagged as critical with impact explanations
• Interactive setup wizard -- gws-auditor setup automates GCP project, API enablement, and service account creation
• Multi-credential profiles -- switch between tenants with --profile
• Customer ID auto-discovery -- no manual ID configuration needed
• CI/CD integration -- --fail-on-critical exits with code 2 for pipeline gates
• Standalone executables -- single-file binaries for Linux and Windows (no Python required)
• Interactive dashboard -- Plotly Dash web UI with dark mode, charts, and drill-down
• AI security analyst -- natural language queries via OpenAI, Anthropic, or AWS Bedrock

CLI

$ gws-auditor

  ╭──────────────── CRITICAL SECURITY FINDINGS (13) ────────────────╮
  │ CIS-4.1.1.1  2SV not enforced for admins                       │
  │ CIS-3.1.3.2.3  DMARC policy is weak (p=none)                   │
  │ ADD-33  7 apps with dangerous OAuth scopes                      │
  ╰─────────── These findings require immediate attention ──────────╯

      Audit Summary
  ┌─────────────────────┬───────┐
  │ Total Checks        │   227 │
  │ Passed              │    96 │
  │ Failed              │    64 │
  │   Critical Failures │    13 │
  │ Pass Rate           │ 60.0% │
  └─────────────────────┴───────┘

HTML Report

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At a Glance

Framework	Full Name	Checks
CIS	CIS Google Workspace Foundations Benchmark v1.3.0	84
CISA	CISA SCuBA Baselines for Google Workspace	97
GOOGLE	Google Security Checklist for Medium & Large Businesses	21
OTHER	Additional best-practice checks	25
	Total	227

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Installation

pip (Recommended)

# Core audit tool
pip install -e .

# With interactive dashboard
pip install -e ".[dashboard]"

# With AI analyst (choose one or all providers)
pip install -e ".[ai-anthropic]"
pip install -e ".[ai-openai]"
pip install -e ".[ai]"              # all providers

# With standalone build support
pip install -e ".[build]"

# Everything
pip install -e ".[dashboard,ai,dev,build]"

Standalone Executable

Pre-built binaries are available on the Releases page -- no Python installation required.

# Linux
chmod +x gws-auditor-linux-amd64
./gws-auditor-linux-amd64 --credentials credentials.json --subject admin@company.com

# Windows
gws-auditor-windows-amd64.exe --credentials credentials.json --subject admin@company.com

To build from source:

pip install -e ".[build]"
python build.py            # creates dist/gws-auditor

Requirements

• Python 3.9+ (not needed for standalone executable)
• Google Workspace Super Admin or delegated admin access
• Service Account with domain-wide delegation (recommended) or OAuth 2.0 credentials

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Setup

Automated Setup (Recommended)

The setup wizard automates GCP project configuration, API enablement, service account creation, and config generation:

# Interactive wizard
gws-auditor setup

# With pre-set values
gws-auditor setup --project my-gcp-project --subject admin@company.com

# Use existing service account key
gws-auditor setup --existing-sa-key credentials.json --subject admin@company.com

The wizard handles 7 of 9 setup steps automatically. The only manual step is authorizing domain-wide delegation scopes in the Google Admin Console -- the wizard provides the Client ID, scope string, and a direct link.

Manual Setup

See docs/SETUP_GUIDE.md for step-by-step manual instructions covering:

1. GCP Project -- create or select a project
2. Enable APIs -- Admin SDK, Gmail, Drive, Calendar, Groups Settings, Cloud Identity, Chrome Policy, Chat, Alert Center, License Manager
3. Service Account -- create with domain-wide delegation, download JSON key
4. Domain-Wide Delegation -- authorize 21 read-only scopes in Admin Console
5. Configuration -- create config.yaml
6. Validation -- gws-auditor --validate to test connectivity

Configure

auth:
  method: service_account
  credentials_file: credentials.json
  credentials_dir: credentials       # folder for multi-credential profiles
  subject: admin@company.com
  customer_id: auto                   # auto-discover from API (or explicit ID)
  profiles:                           # named credential profiles
    production:
      credentials_file: credentials/prod.json
      subject: admin@company.com
    staging:
      credentials_file: credentials/staging.json
      subject: admin@staging.company.com

checks:
  levels: [L1, L2]
  sources: [CIS, OTHER, GOOGLE, CISA]
  sections: all
  exclude: []

output:
  directory: ./reports
  formats: [html, json, csv]

options:
  cache_data: true
  cache_directory: ./cache
  org_units: all
  max_retries: 5
  rate_limit_qps: 10

ai:
  provider: anthropic               # openai, anthropic, or bedrock
  model: ""                          # blank = provider default
  api_key: ""                        # prefer env: ANTHROPIC_API_KEY / OPENAI_API_KEY

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Usage

Full Audit

gws-auditor                            # uses config.yaml
gws-auditor -v                         # verbose
gws-auditor -vv                        # debug logging

# Without config.yaml (minimum required arguments)
gws-auditor --credentials credentials.json --subject admin@company.com

Credential Profiles

gws-auditor --profile ?                # list available profiles
gws-auditor --profile production       # use named profile

CI/CD Pipeline

gws-auditor --fail-on-critical         # exit code 2 if critical checks fail

Filter and Target

gws-auditor --check CIS-1.1.1         # single check
gws-auditor --level L1                 # baseline checks only
gws-auditor --source CIS --source CISA # multiple frameworks
gws-auditor --section Gmail            # specific section
gws-auditor --exclude CIS-1.1.3       # exclude checks
gws-auditor --cached ./cache/          # re-run on cached data

Validate Connectivity

gws-auditor --dry-run                  # quick auth test
gws-auditor --validate                 # detailed API probe

CLI Reference

gws-auditor [OPTIONS] [COMMAND]

Commands:
  setup                   Interactive setup wizard
  dashboard               Launch web dashboard
  analyst                 AI security analyst REPL

Options:
  -c, --config PATH       Configuration file (default: config.yaml)
  --credentials PATH      Credentials JSON file
  --subject EMAIL         Delegated admin email
  --customer-id ID        Customer ID (default: auto)
  --profile NAME          Use named credential profile (? to list)
  --check ID              Run single check
  --level {L1,L2}         Filter by level (repeatable)
  --source {CIS,OTHER,GOOGLE,CISA}  Filter by source (repeatable)
  --section NAME          Filter by section (repeatable)
  --exclude ID            Exclude check IDs (repeatable)
  -o, --output-dir PATH   Output directory
  -f, --format {html,json,csv}  Output format (repeatable)
  --dry-run               Validate auth only
  --validate              Detailed API/scope validation
  --cached DIR            Re-run on cached data
  --list-checks           List all checks
  --fail-on-critical      Exit code 2 on critical failures (CI/CD)
  --resume                Resume interrupted collection
  --no-cloud-info         Suppress Argus Cloud info message
  --skip-update-check     Skip version update check
  --update                Update to latest version and exit
  -v, --verbose           Increase verbosity
  -q, --quiet             Suppress output

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Interactive Dashboard

pip install -e ".[dashboard]"
gws-auditor dashboard                  # http://127.0.0.1:8050
gws-auditor dashboard --port 9000 --host 0.0.0.0

Features: report selector, multi-filter dropdowns, metric cards, status donut chart, section bar charts, detailed findings table with search, compliance drill-down, dark/light mode toggle, CSV/HTML export.

AI Security Analyst

pip install -e ".[ai-anthropic]"
export ANTHROPIC_API_KEY="sk-ant-..."
gws-auditor analyst --provider anthropic

# Or with OpenAI
pip install -e ".[ai-openai]"
export OPENAI_API_KEY="sk-..."
gws-auditor analyst --provider openai

Query audit findings in natural language, get remediation plans, compare reports, and analyze compliance posture. Also available as a chat page in the dashboard.

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Critical Checks

24 checks are tagged as CRITICAL -- failures represent severe security risks requiring immediate attention:

Domain	Examples	Risk
Authentication	MFA not enforced, weak MFA methods, no session limits	Credential theft, account takeover
Email	Missing SPF/DKIM/DMARC, auto-forwarding enabled	Domain impersonation, data exfiltration
Data Protection	Public file publishing, 'anyone with link' sharing	Data breach, unauthorized access
Infrastructure	Dangerous OAuth apps, unrestricted third-party access	Silent data exfiltration, configuration tampering

Each critical check includes a critical_reason explaining the business impact. The CLI shows a red banner for critical failures. Reports include severity and reason in JSON/CSV output.

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Posture Score

Every audit produces a posture score (0-100) that weights findings by severity. Critical failures are squared, so they dominate the score:

Grade	Score	Meaning
A	90-100	Excellent — minimal risk
B	80-89	Good — minor gaps
C	70-79	Fair — moderate risk
D	50-69	Poor — significant gaps
F	0-49	Critical — immediate action needed

See the Posture Score wiki page for the full formula, examples, and improvement guidance.

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Development

git clone <repo-url>
cd gws-security-auditor
python -m venv .venv && source .venv/bin/activate
pip install -e ".[dashboard,ai,dev]"
pytest                                 # 1162 tests

Building Standalone Executable

pip install -e ".[build]"
python build.py                        # dist/gws-auditor (~90 MB)
python build.py --onedir               # faster startup
python build.py --clean                # clean rebuild

Push a tag v* to trigger the GitHub Actions workflow that builds Linux + Windows executables and attaches them to the release.

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Argus Cloud

Open source for individuals. Cloud-hosted for teams.

GWS Security Auditor is and will always be free and open source. For teams that need automation, collaboration, and compliance history, Argus Cloud extends the auditor with managed infrastructure:

	Open Source (Free)	Argus Cloud (from €12.50/mo)
227 security checks, 4 frameworks	✓	✓
HTML, JSON, CSV reports	✓	✓
Interactive dashboard	✓	✓
AI Analyst	BYO API key	Included
Automated daily/weekly scans	—	✓
Hosted dashboard with trends	—	✓
12-month compliance history	—	✓
Regression alerts (Slack, email)	—	✓
Multi-tenant & team access	—	✓
JIRA, webhooks, RBAC	—	✓
Priority support	Community	Email

Sign up for free trial | Pricing

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Acknowledgements

Inspired by Prowler, ScubaGoggles, and GAM.

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License

This project is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0). See the LICENSE file for details.