A Practical Guide to SQL Injection
Ever ordered pizza online? Imagine someone using the address form to secretly tell the website's database to reveal everyone's credit card details. That's SQL Injection — attackers sneaking malicious code through input forms to break into websites and databases.
Simple Explanation of SQL Injection
Imagine you're ordering a pizza online. The website has a form where you type in your address.
Behind the scenes, the website uses a language called SQL to talk to its database, which stores all sorts of information like addresses, names, and customer orders.
SQL Injection is like someone cleverly sneaking extra instructions into that address form. Instead of just giving their address, they add a secret code that tells the database to do things it's not supposed to, like:
- View secret information: Get a list of everyone's pizza orders, including their credit card details.
- Change data: Alter your address on record or even change the price of their pizza.
- Delete everything: In the worst case, wipe out the entire pizza database.
The website expects you to only give it an address, but SQL Injection is like giving it a secret command in a language it understands — bypassing the regular rules to access areas you shouldn't be in.
In short, SQL Injection exploits weaknesses in websites and databases by injecting malicious code through input forms, giving attackers unauthorized access and control. It's a serious security risk, and developers must take steps to protect against it.
Practical Demo
I built a hands-on demo covering the concept, its risks, and prevention methods.
You can interact with it directly in your browser — no installation required.