Analyzing Web Security and Headers with WebPageTest

Web security starts with visibility, yet many sites leave critical headers misconfigured and outdated JavaScript libraries exposed. This text-based course shows you how to leverage WebPageTest to uncover these hidden security gaps and protect your web applications. You will transition from wondering about your site's security posture to confidently auditing and hardening it. Through clear, step-by-step written explanations, you will learn how to run targeted security tests, interpret complex header data, and implement modern defensive configurations. What you'll learn: - Learn the fundamental role of HTTP response headers in web application security. - Analyze WebPageTest reports to identify missing or misconfigured security headers. - Configure essential headers including Content Security Policy, Strict-Transport-Security, and modern Permissions-Policy. - Detect outdated and vulnerable client-side JavaScript libraries using automated audit results. - Understand how to interpret security scoring and prioritize remediation efforts. - Practice translating raw testing data into actionable server configuration updates. The course begins with foundational web security concepts and key terminology before guiding you through the WebPageTest interface. You will then progress from running basic security scans to analyzing complex headers and implementing secure configurations on your servers. This course is designed for web developers, system administrators, and security beginners who want to improve their site's defenses. No prior security experience is required. Start reading today to secure your web applications and master the essentials of security header analysis.