An old (already 13 years old) document on website security (MySQL+PHP)

The article about PHP and MySQL security focuses on various threats that can affect developers and users of these technologies. The author discusses threats such as SQL injection, XSS (Cross-Site Scripting), and CSRF (Cross-Site Request Forgery). Each of these threats is thoroughly explained, and defense techniques are presented that can help minimize risk. The article also highlights best practices that should be adopted by developers to ensure safe processing of user data. Finally, it emphasizes the importance of regular security audits for web applications and updating used libraries and components, which is crucial for maintaining a high level of security.