SQL Injection ka Funda

Understand how SQL Injection works with Fullstackgada

Instagram icon More Diagrams

🔒 SQL Injection Attack Demo

Bhide ki Problem: Bhide ne user input ko seedha SQL query mein daal diya. Dekhte hain kaise hacker iska fayda uthata hai!

Server Log:

Login attempt ka wait kar raha hai...
SQL Query Preview:
SELECT * FROM Users WHERE username = '?' AND password = '?';

🛡️ Protection ke Tareeke

Jethalal ka Solution: Prepared statements aur proper validation se SQL injection ko roka ja sakta hai.
// Prepared Statement Example (Safe)
const query = "SELECT * FROM Users WHERE username = ? AND password = ?";
db.prepare(query).get(username, hashedPassword);
// User input automatically escaped hota hai
// Input Validation
function validateInput(input) {
return input.replace(/['"\\;]/g, '');
// Dangerous characters hatao
}
1
Hamesha parameterized queries use karo
2
Passwords ko bcrypt/SHA-256 se hash karo
3
Sabhi user inputs ko validate karo
4
Jab possible ho, ORM tools use karo

💬 Jethalal aur Bhide ki Baat

"Baat Shuru Karo" pe click karke Jethalal-Bhide ki SQL Injection wali discussion shuru karo!

🔍 Vulnerable vs Secure Code ki Takkar

Aspect ❌ Vulnerable Code ✅ Secure Code
Query Building String concatenation Prepared statements
Input Handling Direct insertion Parameter binding
Password Storage Plain text comparison Hashed comparison
Risk Level 🔴 High (Pura bypass) 🟢 Low (Attack block)