If you’re building web applications or APIs, securing your database should be one of your top priorities. Even a small oversight can lead to data breaches, leaked user information, or corrupted systems. In this post, I’ll walk you through 7 common mistakes developers make when handling databases —and how to avoid them with real-world solutions. ❌ 1. Storing Plaintext Passwords Never, ever store passwords as plain text. What’s the risk? If your database gets leaked, all user credentials are exposed. ✅ How to fix it: Use strong hashing algorithms like bcrypt or argon2 with proper salting. For example, in Node.js: ❌ 2. No SQL Injection Protection SQL injection is one of the most common (and dangerous) web vulnerabilities. What’s the risk? Attackers can manipulate your SQL queries to access or destroy data. ✅ How to fix it: Use prepared statements or parameterized queries . Avoid string concatenation. For example, in Node js: ❌ 3. Exposing Database Ports to the Public Don’t...
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