Securing Web Apps with Certificate Transparency and HTTPS Headers

Ensuring the authenticity of your website's SSL/TLS certificates is critical to protecting user data and maintaining trust. This course introduces you to the core concepts of Certificate Transparency (CT) and the essential role of security headers in modern web architecture. You will transition from understanding basic web requests to implementing robust transport-layer security strategies. By learning how browsers validate certificates and how web standards have evolved, you will gain the skills needed to defend against certificate misissuance and unauthorized interception. What you'll learn: - Understand the fundamentals of Certificate Transparency and public key infrastructure (PKI). - Analyze how browsers detect and prevent the use of fraudulent or misissued SSL/TLS certificates. - Explore the history of the Expect-CT header and why modern web standards have shifted to default enforcement. - Configure critical HTTP security headers like HSTS and Content Security Policy (CSP) to harden your server. - Identify security vulnerabilities related to transport-layer misconfigurations through written case studies. The course begins with foundational concepts of certificates and web trust, then guides you through the mechanics of transparency logs, historical headers, and modern, active browser enforcement techniques. This text-only course is designed for beginner web developers, system administrators, and security enthusiasts who want to understand modern HTTPS security. No prior security experience is required. Start reading today to build a safer, more resilient web presence.