May 30, 2025

S6E14 - Securing M365 with ScubaGear: A Deep Dive into CISA’s Assessment Tool

45 minutes

In this episode, we dive deep into ScubaGear, an open-source tool developed by the Cybersecurity and Infrastructure Security Agency (CISA) as part of the Secure Cloud Business Applications (SCuBA) project. Designed to assess Microsoft 365 (M365) tenant configurations, ScubaGear helps organizations align with CISA’s Secure Configuration Baselines (SCBs) to prevent costly misconfigurations. From setup to real-world applications, we unpack how ScubaGear strengthens M365 security and share practical tips for IT admins and security teams.

What You’ll Learn:

Why ScubaGear Matters: Learn how ScubaGear addresses the growing threat of cloud misconfigurations, which accounted for 30% of cloud attacks in early 2024. We discuss its origins in CISA’s SCuBA project, and its value for US federal agencies, private organizations, and critical infrastructure.

How ScubaGear Works: A technical breakdown of ScubaGear’s PowerShell-based workflow, using Microsoft Graph APIs and Open Policy Agent (OPA) to compare tenant settings against SCBs. We cover setup requirements.

Common Misconfigurations: Examples like disabled MFA or weak DLP policies, and how ScubaGear’s HTML, JSON, and CSV reports provide actionable remediation steps.

Best Practices: Tips for integrating ScubaGear into security workflows, including regular scans, policy customization, and combining with tools like Microsoft Secure Score.

Real-World Insights: Sam shares experiences from consulting.

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By Alan Armstrong & Sam Foot

4.8

1212 ratings