{keyword} Union All Select Null,null,null,null,null,null-- Gojb -

: For a UNION to work, the second query must have the exact same number of columns as the first query. 3. SELECT NULL,NULL,NULL,NULL,NULL,NULL

: NULL is used because it is compatible with almost any data type (integers, strings, dates, etc.). : For a UNION to work, the second

: Any code that was supposed to follow the input (like a closing quote or a WHERE clause) is ignored by the database, preventing syntax errors that would break the injection. 5. GoJB : Any code that was supposed to follow

This is a SQL operator used to combine the result sets of two or more SELECT statements into a single result set. : A website takes user input and places

: A website takes user input and places it directly into a SQL query without "cleaning" it first.

: This "comments out" the rest of the original SQL query written by the developers.

This is the "probe" part of the injection. The attacker is trying to determine the number of columns being returned by the original database query.