MERN stack powerful hai, lekin agar security ka dhyan na diya jaye to hackers ka easy target ban sakta hai. 😨 Aaj hum dekhenge best security practices jo aapke MERN app ko safe aur secure banayenge! 🚀
🔥 1. Secure Authentication with JWT
✅ Issue: Weak authentication = Unauthorized access 😱
✅ Solution: JSON Web Tokens (JWT) ka use kare!
const jwt = require('jsonwebtoken'); const token = jwt.sign({ userId: user._id }, 'your_secret_key', { expiresIn: '1h' });
👉 Pro Tip: Always store JWT in HTTP-only cookies instead of local storage.
🔥 2. Hash User Passwords (Bcrypt se Encryption)
✅ Issue: Plain text passwords = Data breach risk! 😨
✅ Solution: Use bcrypt to hash passwords before storing.
const bcrypt = require('bcrypt'); const hashedPassword = await bcrypt.hash(userPassword, 10);
👉 Pro Tip: Minimum 10 salt rounds rakhein taaki hash strong ho.
🔥 3. Prevent NoSQL Injection in MongoDB
✅ Issue: Direct user input = Malicious queries! 😡
✅ Solution: Use Mongoose .exec() to avoid injection.
const user = await User.findOne({ email: req.body.email }).exec();
👉 Pro Tip: Always validate & sanitize user input pehle!
🔥 4. Secure Your APIs (Rate Limiting & CORS)
✅ Issue: Unlimited API requests = DDOS Attack! 😱
✅ Solution: Use express-rate-limit to limit requests.
const rateLimit = require('express-rate-limit'); const limiter = rateLimit({ windowMs: 15 60 1000, max: 100 }); app.use(limiter);
👉 Pro Tip: CORS ko properly configure karein taaki only trusted domains access karein.
🔥 5. Avoid XSS & CSRF Attacks
✅ Issue: Malicious scripts users ke browser me run ho sakte hain! 😡
✅ Solution: Use helmet.js for security headers.
const helmet = require('helmet'); app.use(helmet());
👉 Pro Tip: Form submissions me CSRF protection lagaye using csurf package.
🚀 Bonus Security Tips:
🔹 Always use HTTPS - SSL certificate se secure karein.
🔹 Sanitize inputs - express-validator ka use karein.
🔹 Disable dangerous HTTP methods - PUT, DELETE ko restrict karein.
🔹 Regular dependency updates - npm audit se vulnerabilities check karein.
🛡 Aapki MERN App Kitni Secure Hai? 🤔
Kya aapne apni MERN stack app me ye security measures implement kiye hain? Ya koi aur challenge face kiya hai? 🤔
👇 Comment karke batao! Main next blog me aapke suggested security topics cover karunga! 🚀🔥