3.4. Controls to Mitigate Attacks and Software Vulnerabilities

💡 First Principle: Software vulnerabilities follow patterns — the same classes of flaws (injection, overflow, access control failures) appear across different languages, frameworks, and applications because they stem from the same fundamental programming mistakes. Understanding the class of vulnerability tells you both why it exists and what category of control prevents it.

The OWASP Top 10 organizes the most common web application vulnerability classes. CySA+ Objective 2.4 maps directly to these categories. For each vulnerability type, analysts need to understand: what the attacker does, what the impact is, and what control prevents it. The exam presents scenarios requiring you to identify the vulnerability type and the appropriate mitigation.

⚠️ Common Misconception: Input validation alone prevents SQL injection. Parameterized queries (prepared statements) are the primary defense — they separate SQL code from user-supplied data at the database driver level, making injection structurally impossible regardless of what data is supplied. Input validation is a secondary defense that reduces attack surface but can be bypassed.