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

: The attacker is trying to determine how many columns the original database table has. If the number of NULL values doesn't match the number of columns in the original query, the database will return an error. By adding or removing NULL s, an attacker can find the exact table structure.

: This ensures the database treats input as data only, never as executable code. {KEYWORD}' UNION ALL SELECT NULL,NULL,NULL,NULL,NULL-- bWmV

: This is likely a random "cache-buster" or unique identifier used by automated security scanners (like Burp Suite or Acunetix) to track which specific payload triggered a response. Why you are seeing this : The attacker is trying to determine how