{keyword} Union All Select Null,null,null,null,null,null,null,null-- Avdq | 2024 |

An attacker can then replace the NULL values with commands to: Steal . Access private customer data . Delete or modify database records .

: This command tells the database to combine the results of the original query with a new "injected" query. An attacker can then replace the NULL values

: The attacker is trying to determine how many columns the original database table has. They keep adding NULL values until the page loads correctly without an error. legitimate code that follows.

: This is a SQL comment symbol. It tells the database to ignore the rest of the original, legitimate code that follows. An attacker can then replace the NULL values