Hacking Websites With SQL Injection
A single line of input can break a login system that was supposed to be secure.
Without brute force, without malware, and without using any hacking tools, a carefully crafted SQL payload can manipulate how a database processes authentication and grant access where it should be denied.
In this video we demonstrate how SQL Injection works by bypassing a login system using a classic payload, and explain how user input can be interpreted as executable database logic when it is not handled correctly.
The attack itself is simple.
But the impact can be massive.
From authentication bypass to full database exposure, SQL Injection has been responsible for some of the most serious security breaches in web applications.
Understanding how this works is essential for both developers and security professionals.
Because sometimes the biggest vulnerabilities don’t come from complex exploits,
they come from how input is handled.
Demo Setup
Install Docker: https://docs.docker.com/engine/
Run: docker run -d -p 3000:3000 bkimminich/juice-shop
Payload Used
' OR 1=1 --
Topics Covered
• How website login systems work
• How SQL queries are constructed
• What SQL Injection actually is
• Breaking authentication logic
• The OR 1=1 technique explained
• Why this vulnerability happens
• Real-world impact of SQL Injection
• How to prevent it using prepared statements
Timestamps
0:00 Breaking a “secure” login system
0:25 How login systems work
1:37 Live SQL Injection demo
3:10How to prevent SQL Injection