Web App Security: 10 Common Mistakes and How to Avoid Them

Web application security is not a luxury — it's a necessity. Here are the most common mistakes and how to avoid them.

XSS (Cross-Site Scripting): When you accept user input without sanitizing it. Solution: Use libraries like DOMPurify and avoid using innerHTML directly.

SQL Injection: When you embed user input directly into SQL queries. Solution: Use parameterized queries or an ORM.

CSRF: When a user is forced to execute unintended actions. Solution: Use CSRF tokens.