Security vulnerabilities often arise not from sophisticated attacks but from simple coding mistakes. SQL injection and cross-site scripting remain among the most common weaknesses.
The most important rule: never trust user input. Every input must be validated and sanitized on the server side. Prepared statements for database queries are a must, not a nice-to-have.
Modern frameworks like Astro, Next.js, or SvelteKit offer built-in protection mechanisms. Nevertheless, every team should integrate regular security audits and dependency checks into their CI pipeline.
