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VSD Domain
Shrink the target, harden the surface
The walls. Where attackers probe. Master this domain from M0 Sentry through M5 Commander. Six certification levels, each proving real-world capability in vulnerability & surface defense.
Domain Code
VSD
Methodology
CSR
Continuous Surface Reduction
Cert Levels
6
M0 Sentry to M5 Commander
Six levels of certification in Vulnerability & Surface Defense. Each builds on the previous and maps to a CDArmy operator tier.
Foundations. Learn the landscape, understand the threats, and build your first security skills in this domain.
Hands-on operations. Configure domain-specific tools, monitor systems, and respond to basic incidents.
Analysis and investigation. Triage alerts, assess domain vulnerabilities, and produce professional reports.
Build and deploy. Design domain-specific security systems, write detection rules, and automate defenses.
Strategic design. Create multi-environment architectures and lead technical teams in this domain.
Lead under pressure. Command incident response, design security programs, and mentor the next generation in this domain.
VSD domain certifications are currently in development. Enrollment opens in June 2026. Create your Nexus ID now to be notified when courses become available.