{keyword}') Union All Select Null,null,null,null,null,null,null-- Hofz Apr 2026

: Ensure all data entered by users is cleaned and validated before it hits your database.

: This is likely a "canary" or a unique identifier used by automated security scanners to confirm if the injection was successful. What should you do? : Ensure all data entered by users is

: The attacker uses NULL values to figure out how many columns are in the original database table. If the number of NULL s doesn't match the number of columns in the original query, the database will return an error. : Ensure all data entered by users is

: This is the core of the attack. It tells the database to combine the results of the legitimate query with the results of a new, malicious one. : Ensure all data entered by users is