{keyword}') Union | All Select Null,null,null,null,null,null,null,null,null-- Zljd

The string you provided is a classic example of a . This specific snippet is designed to exploit a vulnerability in a database-driven application to bypass security filters and extract unauthorized data.

: This is the SQL comment symbol. It tells the database to ignore everything that follows it in the code, effectively "muting" the rest of the original, legitimate query. The string you provided is a classic example of a

: Attackers can replace the NULL values with table names (like users or passwords ) to steal the entire database. The string you provided is a classic example of a