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Learn about the most critical security vulnerabilities in Next.js 15 applications through this comprehensive 32-minute tutorial that covers eleven common mistakes developers make that can lead to user data leaks and security breaches. Explore insufficient server action protection, inadequate route handler security, and server component vulnerabilities while understanding how to properly implement authorization and prevent SQL injection attacks. Discover how to protect against XSS and CSRF attacks, implement effective rate limiting and bot protection, and avoid data leakage in both client components and data fetching operations. Master security best practices including email validation, OWASP security principles, and learn how to use security tools like Arcjet for comprehensive application protection, ensuring your Next.js applications remain secure and user data stays protected.
