Dive deep into Server-Side Template Injection (SSTI) protection techniques for TypeScript applications through hands-on implementations. Learn to prevent code execution, data exposure, file system access, and credential theft that compromise application security. Explore input sanitization strategies, HTML escaping, secure EJS template configuration, and safe rendering patterns. Develop skills to create resilient web applications that properly validate, sanitize, and process user input in server-side templates across TypeScript environments.