Side-Channel Security: Analyzing Cache and Physical Hardware Attacks

Modern software security is only as strong as the hardware it runs on, yet physical and microarchitectural vulnerabilities often bypass traditional software defenses. This text-based course introduces you to the fundamentals of side-channel security, focusing on how CPU caches and physical hardware leak sensitive information. You will transition from a standard software-focused mindset to a hardware-aware security perspective. By reading detailed explanations, examining conceptual code examples, and analyzing real-world attack vectors, you will learn how to identify potential leakage points and apply robust mitigation strategies. What you'll learn: Understand the foundational concepts of side-channel analysis and how physical properties leak data; Analyze how CPU cache architectures work and why they are vulnerable to timing attacks; Examine classic cache attack techniques, including Prime+Probe and Flush+Reload; Identify physical side-channel vectors such as power consumption, electromagnetic emission, and acoustic leakage; Apply modern software-level mitigations, constant-time programming techniques, and hardware-level defense concepts; Evaluate transient execution vulnerabilities and modern microarchitectural security threats. The course begins with foundational definitions of side channels and hardware architecture before progressing systematically through cache attacks, physical leakage analysis, and modern countermeasure implementation. Designed for beginner security enthusiasts, software developers, and system architects, this course requires no prior hardware security experience. Start building a hardware-aware security mindset and protect your systems from subtle side-channel threats today.