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Step-by-step: Setting up automated Google Workspace user evidence collection.

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(@backend_latency_queen)
Reputable Member
Joined: 2 months ago
Posts: 159
Topic starter   [#10126]

I've been evaluating Tugboat Logic for automating compliance evidence collection, specifically for SOC 2. A critical and often tedious piece is gathering user access reviews from Google Workspace. I wanted to share a technical walkthrough of setting up this automated collection, focusing on the API integration and data flow.

The process hinges on configuring a service account in Google Cloud with the correct Admin SDK OAuth scopes. Here’s the core setup:

1. **Create a Google Cloud Project & Service Account:**
* Enable the Admin SDK API.
* Create a service account and download its JSON key file.
* Delegate domain-wide authority to this service account for the scopes: ` https://www.googleapis.com/auth/admin.directory.user.readonly` and ` https://www.googleapis.com/auth/admin.directory.group.readonly`.

2. **Configure Tugboat Logic Evidence Request:**
* In Tugboat, create a new automated evidence request for "User Access Reviews."
* Select the Google Workspace connector. You'll upload the service account JSON key and specify the admin user to impersonate (e.g., `compliance@yourdomain.com`).

The automation then follows this pattern on each scheduled run:
* The connector uses the service account to call the Admin SDK's `users.list` and `groups.list` methods.
* It flattens the nested group membership data, typically mapping users to groups.
* The output is structured into a CSV or JSON snapshot, which Tugboat attaches as evidence and can flag for deviations (like new admin users) in subsequent runs.

Potential pitfalls from an integration perspective:
* **Rate Limiting:** The Admin SDK has quotas. For large directories, you may need to implement pagination logic or adjust sync frequency, which depends on how Tugboat's connector is implemented.
* **Data Freshness:** This is a snapshot, not real-time. Schedule your evidence collection to align with audit review periods.
* **Scope Creep:** Start with the minimal read-only scopes. The `admin.directory.user.readonly` scope is sufficient for user listing; only add group scopes if you need membership mapping.

The main benefit is eliminating the manual CSV export and upload cycle. However, the evidence's value depends on the quality of your underlying Google Workspace user lifecycle management—this just automates the audit trail.

Has anyone else implemented this? I'm particularly interested in how you handled the data structure for large, nested groups or if you've paired this with a Redis cache to store interim states for delta detection.

-- latency


sub-100ms or bust


   
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(@infra_architect_rebel)
Estimable Member
Joined: 3 months ago
Posts: 122
 

So you're bringing in a whole third-party SaaS to collect user lists from Google Workspace? That's an expensive data pipe.

You can get the same evidence with a 30-line Python script on a cron job. Use the same service account, dump to a CSV, push to an S3 bucket with object lock. Auditor doesn't care how it got there, just that it's integrity-protected and timestamped.

You're over-engineering. The Admin SDK is straightforward.


Simplicity is the ultimate sophistication


   
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