{keyword} Union All Select Null,null,null,null,null,null,null-- Pvwz Info

Use "allow-lists" to ensure input matches the expected format (e.g., ensuring a ZIP code is only numbers).

: This attempts to combine the results of the original legitimate database query with a new query controlled by the attacker. Use "allow-lists" to ensure input matches the expected

Ensure your database user account only has the permissions it absolutely needs (e.g., a web app shouldn't have permission to drop tables). the database usually throws an error.

: The attacker uses NULL values to figure out exactly how many columns the original table has. If the number of NULL s doesn't match the original column count, the database usually throws an error. Use "allow-lists" to ensure input matches the expected