5 Node.js security code snippets every backend developer should know` As a backend developer working with Node.js, it is essential to follow best security practices to protect your application against various threats. One of the most critical aspects of Node.js security is implementing input validation and sanitization to prevent common attacks such as SSRF or HTTP parameter pollution. Fastify schema-based approach can be used to validate request and response data in routes, ensuring that only properly formatted data enters the system. Additionally, using a secure password hashing algorithm like Bcrypt is crucial to protect user passwords from being easily deciphered in case of a data breach. Furthermore, Knex.js provides a powerful SQL query builder that safeguards against SQL injection attacks by using parameterized queries and escaping values entered into the SQL statements. Rate limiting with fastify-rate-limit can help prevent denial-of-service (DoS) attacks by controlling the number of requests a client can make to your application within a specific timeframe. By following these security best practices and leveraging robust tools like Snyk, backend developers can significantly enhance the security and integrity of their Node.js applications.