🛡️ DefenseStack Lab Security+ SY0-701 · Domain 4
0 / 100 pts
🔐 DefenseStack Lab · Mission Briefing

You are the Security Architect for MidWest Regional Health System

MRHS operates a hybrid cloud environment with on-prem hospital systems, clinical workstations, and AWS-hosted patient portals. A recent risk assessment identified seven active vulnerability classes across the infrastructure. Your mission: construct layered mitigation strategies for each threat, then build a data-driven remediation queue that balances CVSS severity, business impact, and exploitability.

Healthcare Sector Hybrid Cloud HIPAA Regulated 7 Active Vuln Classes

🧱 Module 1 — Layered Defense Builder (50 pts)

Select a target environment, identify the active vulnerability class, then build a layered control stack by assigning Primary and Supporting mitigations. Your selections are evaluated against the Mitigation Selection Framework.

⚖️ Module 2 — Remediation Prioritizer (50 pts)

Score and rank 5 active CVEs using a weighted triage formula combining CVSS base score, exploitability (public exploit available?), and business impact (data sensitivity, system criticality). Drag to reorder your final priority queue.

Mitigation Selection Framework Reference

Vulnerability ClassPrimary MitigationSupporting Mitigations
Unpatched OS/App CVEPatchingNetwork isolation, compensating controls
Default credentials / insecure defaultsHardeningMFA, network ACLs
SQL Injection / XSSInput ValidationWAF, CSP, parameterized queries
Lateral movement after breachSegmentationMicro-seg, ZTNA, host-based firewall
Ransomware blast radiusAccess Control / Least PrivilegeSegmentation, immutable backups, EDR
Cloud misconfigurationCloud Hardening (CSPM)IaC scanning, least-privilege IAM, audit logs
Malware / suspicious fileIsolation / SandboxingEDR behavioral detection, app whitelisting
🧱 Module 1 — Layered Defense Builder  |  50 points
For each of the 4 scenarios below, select the environment, identify the active vulnerability class, then build a layered control stack. Assign each control as Primary or Supporting. You must select exactly 1 Primary and at least 1 Supporting control per scenario.
Scenarios Completed0 / 4
0 / 50
⚖️ Module 2 — Remediation Prioritizer  |  50 points
Five CVEs have been flagged in the MRHS vulnerability scan. For each, adjust the three scoring dimensions, then drag the cards to arrange your final remediation queue from highest to lowest priority. Your order is evaluated against the optimal remediation sequence.
Scoring Progress 0%
Score all 5 CVEs, then arrange your priority queue
Priority Formula
Priority Score =
  (CVSS × 0.4)
+ (Exploitability × 3.0)
+ (Business Impact × 2.0)
Higher score = patch first. Exploitability carries heavy weight — a CVSS 7.0 with a public exploit may outrank a CVSS 9.0 with no known exploit.
🎓

Complete both modules

Your score will appear here after completing Module 1 and Module 2.

📚 Debrief — Key Principles