{keyword}') Union All Select Null,null,null,null,null,null,null,null-- Mxyc May 2026

: 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.

The text ') UNION ALL SELECT NULL,NULL...-- is a malicious payload used to test for vulnerabilities in a database. : Attackers use NULL to figure out exactly

: This attempts to "break out" of the developer’s intended code by closing a data field and a function. the page loads