Seven Common Backend Security Mistakes Node.js Developers Must Avoid

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A technical guide published on DEV Community outlines seven critical backend security mistakes that Node.js developers frequently make in production environments. Key issues include trusting client-side data such as prices or inputs without server-side validation, storing passwords in plain text instead of using hashing algorithms, and hardcoding secrets like API keys or database credentials directly in source code. The guide also highlights failures in authorization logic, where being authenticated does not automatically grant permission to perform sensitive operations, and the absence of rate limiting on endpoints like login and password reset. Additionally, developers are warned against returning verbose error messages that expose stack traces or internal infrastructure details to potential attackers.

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