Security Remote File Inclusion (RFI) Fundamentals: From allow_url_include to RCE
Learn how Remote File Inclusion abuses PHP wrappers and allow_url_include to achieve remote code execution, plus blue-team defenses.
Web Exploitation
Security 
Security Server-Side Template Injection: From {{7*7}} to RCE
A practical guide to Server-Side Template Injection: detecting, fingerprinting, and escaping Jinja2 and Twig sandboxes to achieve RCE.
Security Authentication Bypass Techniques: Logic Flaws, SQLi, Weak Resets, and 2FA Bypass
A practical walkthrough of four authentication bypass classes — logic flaws, SQLi, weak password resets, and 2FA bypass — with detection and defense.