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

: In a Union-Based attack, the injected SELECT statement must have the exact same number of columns as the original statement. Attackers use NULL as a placeholder to discover the correct column count without triggering data type errors.

This treats user input as data only, never as executable code. It is the most effective defense against SQLi. : In a Union-Based attack, the injected SELECT

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 It is the most effective defense against SQLi

Once confirmed, the attacker would replace the NULL values with functions like version() , user() , or table names (e.g., information_schema.tables ) to begin exfiltrating sensitive data. Prevention and Mitigation Learn more Once confirmed, the attacker would replace

To protect against these attacks, developers should never build queries by concatenating strings. Instead, use these industry-standard methods: