{keyword} Union: All Select Null,null,null,null,null,null,null,null,null,null-- Zvuz

: Once the column count is known, the attacker replaces the NULL s with commands to extract sensitive data, such as usernames, passwords, or credit card numbers. Prevention and Best Practices

: Rejecting any input that contains SQL keywords like UNION , SELECT , or comments ( -- ). : Once the column count is known, the

: These tools can automatically detect and block common SQLi patterns like the one you provided. If we were to view this string as

If we were to view this string as a narrative, it tells the story of a . never as executable code.

To prevent these types of "essays" from being written into your database logs, developers use several layers of defense:

: By injecting ten NULL values, the attacker is essentially asking the database, "Do you have ten columns?" If the page loads normally, the answer is "yes."

: Using parameterized queries ensures the database treats input as literal text, never as executable code.