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

SQL Injection occurs when untrusted user input is concatenated directly into a database query, allowing an attacker to manipulate the original command.

This treats user input as data only, never as executable code. It is the most effective defense against SQLi.

: The single quote ( ' ) is used to "break out" of the intended data field. By closing the string early, the attacker can append their own SQL commands. SQL Injection occurs when untrusted user input is

: This operator combines the results of the original query with a new, malicious query. This allows an attacker to retrieve data from other tables that they weren't supposed to see.

The string you provided, '{KEYWORD}' UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL-- viGJ , is a classic example of a , specifically a Union-Based SQL Injection attack. : The single quote ( ' ) is

Ensure the database user account used by the application has the minimum permissions necessary, preventing an attacker from accessing system tables or dropping data even if an injection occurs. AI responses may include mistakes. Learn more

: This is a random string (often called a "cache buster" or signature) used by security researchers or automated scanners to identify their specific request in server logs. The Objective of the Attack This allows an attacker to retrieve data from

Implement strict "allow-lists" for user input to ensure it matches the expected format (e.g., only alphanumeric characters).