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

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

This represents the original search term or input value that a legitimate user would enter. In an attack scenario, the "payload" (the rest of the string) is appended to this keyword to trick the database into executing an additional command alongside the intended query. 2. UNION ALL : A website takes user input and places

If the page returns an error (like "The used SELECT statements have a different number of columns"), the attacker will try again with five or seven NULL values until the error disappears. 4. -- (The Comment) In SQL, double-dashes signify the start of a comment. : A website takes user input and places