SQL Injection (SQLi)

Hacking Databases with Text

By RecOsint | Dec 3, 2025

Login without a Password? Imagine walking up to a locked door, whispering a magic word, and the lock simply falls off. In the digital world, this is SQL Injection. It allows hackers to bypass login screens instantly.

Websites store data (users, passwords) in a Database. The website talks to the database using a language called SQL. Normal: "Check if this password is correct." Hacked: "Ignore the password and let me in."

Talking to the Brain

The Magic Payload The most famous hack is simple: ' OR 1=1 -- What it means: The hacker tells the database: "Log me in IF the password is right... OR if 1 equals 1." Result: Since 1 always equals 1, the database says "TRUE" and logs you in as Admin.

A severe SQLi attack can force the database to "Dump" (reveal) everything it knows: Usernames & Passwords Credit Card Numbers Emails

Data Dump

This vulnerability exists because of lazy coding. The Fix: Developers must "Sanitize" user input (check for malicious code) before sending it to the database. Rule: Never trust what a user types.

Sanitization