{keyword} Union All Select Null,null,null,null,null,null,null,null-- Ppsq May 2026

The string you provided is a classic payload. It is not a feature of a specific software product but rather a technique used by security researchers and attackers to probe databases for vulnerabilities. Purpose of the Payload

: This represents the original input (like a product category or search term) that the application expects. The string you provided is a classic payload

: Attackers use NULL because it is compatible with almost every data type (integers, strings, dates), making it the "safest" way to avoid syntax errors while testing column counts. such as usernames

Once an attacker knows there are 8 columns, they can replace the NULL values with commands to extract sensitive data, such as usernames, passwords, or database versions. SQL injection UNION attacks | Web Security Academy The string you provided is a classic payload