: This attempts to "break out" of the developer’s intended code by closing a data field and a function.
Modern web development has largely moved past this threat using a technique called (or Parameterized Queries). Instead of letting user input mix directly with the code, the database is told: "Treat this input strictly as text, no matter what symbols are inside it." : This attempts to "break out" of the
Here is a look into what that string is designed to do and why it’s a fundamental concept in web security. What is this string? What is this string
: This is the SQL comment symbol. It tells the database to ignore everything else in the original code, effectively "turning off" the security checks or logic that were supposed to happen next. The Goal: Data Exfiltration The Goal: Data Exfiltration If a website is
If a website is vulnerable to this, an attacker doesn't just stop at NULL . They eventually replace those NULL s with commands to extract sensitive info—like your —and display them right on the screen where the "Keyword" results should have been. How Developers Stop This