Foundations of Deserialization Attacks in Python and PHP

Data serialization is essential for modern applications to transmit and store information, but handling untrusted data incorrectly can open the door to devastating remote code execution vulnerabilities. Understanding how these flaws work is critical for anyone looking to secure web applications or pursue a career in application security. This written course guides you through the core concepts of serialization and deserialization, revealing how attackers exploit insecure data handling. You will learn to identify vulnerable entry points in Python and PHP applications and apply modern defensive strategies to protect your systems. What you'll learn: - Understand the fundamental mechanics of serialization and deserialization in web architecture - Identify insecure deserialization vulnerabilities in Python and PHP codebases - Analyze how attackers leverage object injection to achieve remote code execution - Apply secure coding practices and zero-trust principles to data handling - Configure safe alternatives like JSON and modern cryptographic signing to protect serialized data The course starts with basic definitions and foundational concepts of data state preservation before moving into practical code walkthroughs. You will read through step-by-step vulnerability analyses and study secure, real-world refactoring examples. Designed for beginner developers, aspiring security analysts, and system administrators, this course requires no prior cybersecurity experience. Start reading today to build a stronger foundation in application security and secure coding.