System Hardening Courses
Google via Coursera Linux Security and Hardening, The Practical Security Guide.
Udemy OWASP Top 10: #5 Broken Access Control and #6 Security Misconfiguration
LinkedIn Learning Complete Linux Security & Hardening with Practical Examples
Udemy Kubernetes Security: System Hardening
Pluralsight Ciberseguridad Todo en Uno - Segunda Parte
Udemy Integrating Automated Security Testing Tools
Pluralsight