: 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
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 is the SQL comment symbol
: Attackers use NULL to figure out exactly how many columns the original database table has. If the number of NULL s matches the columns, the page loads; if not, it crashes. Instead of letting user input mix directly with
It looks like you've included a in your request. In the world of cybersecurity, that specific snippet is a classic example of an "Union-based" attack. In the world of cybersecurity, that specific snippet
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?
: This attempts to "break out" of the developer’s intended code by closing a data field and a function.
