The article discusses the best practices for handling user input in web applications from the point of view of a backend developer. The article emphasizes the importance of proper handling of user input to prevent security vulnerabilities such as SQL injection, cross-site scripting, and other types of attacks. The best practices include input validation, sanitization, parameterized queries, limited user permissions, session management, error handling, and regular updates. The article concludes that by following these best practices, developers can ensure that user input is properly validated, sanitized, and secured, and prevent security vulnerabilities in their web applications.

The article discusses the most common web application security threats and provides prevention techniques from the point of view of a security expert. The threats include SQL injection, cross-site scripting (XSS), cross-site request forgery (CSRF), broken authentication and session management, security misconfiguration, insecure cryptographic storage, and insufficient authorization and access control. The prevention techniques involve parameterized queries, input validation, anti-CSRF tokens, strong password hashing algorithms, session timeouts, and re-authentication requirements, regular security audits, strong encryption and hashing algorithms, role-based access control (RBAC), and implementing access controls based on the principle of least privilege. The article emphasizes the importance of understanding and preventing these threats to protect sensitive data and maintain user trust.